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ARTICLES
(use your browser's 'find' command
to search this index - Ctrl F in Explorer)
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| 2025 Arctic Cat 858 stock dyno test pre and post actual breakin |
| we compare the Catalyst 858 torque and HP curve to the 850 Polaris and 850 SkiDoo |
3/2/2024
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| Polaris 850 Boost tuning Speedwerx muffler options and ECU tuning |
| Mod stock muffler, quiet Trail Lightweight, L2 muffler all tested with stock ECU and Stages 2.0.2.5 and 4.0 |
2/16/2024
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| 2024 SkiDoo MXZ850comp New H2O/methanol injected 850 twostroke turbo |
| Tested stock and with HotRod Sled Shop reflashes, new Jaws exh w/ stock ECU and HRSS Jaws reflashes |
1/13/2024
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| 2024 AC Catalyst 600 1000 mile demo sled/ 50 mile production sled |
| compare well broken in demo sled with Billy Howards 50 mile production sled |
1/6/2024
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| '23 SkiDoo SummitX TurboR Stock, HRSS reflashes and new Jaws Turbo Exh |
| Pump gas stock evaluation compared to Jaws, and HotRodSledShop reflashes for both exhaust systems |
10/23/2023
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| 2023 Polaris 9RMatryxRMK Dyno tested pre and post breakin of rings. |
| Compare torque and HP curves of the new 900 with our well broken in 850 Patriot. |
2/9/2023
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| PolarisBoostTurboTuning Hot Rod Sled ShopTorque Link Reflashes |
| pump gas, 100 octane and 114 octane tunes for trail riding or lake racing. |
2/8/2023
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| SkiDooSummitTurboTuning Hot Rod Sled Shop Torque Link Reflashes |
| pump gas, 100 octane and 114 octane tunes for trail riding or lake racing. |
2/7/2023
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| SkiDoo 900R pump gas mods SkiDoo 900R with Hurricane ECU and components |
| Hurricane replacement ECU, two intercoolers, midpipe, muffler tested with 90.8 octane pump gas. |
2/5/2023
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| 2003 SkiDoo 800 non-HO updating early engines to modern HP levels |
| Altering ports to Race Logic templates, optimal aftermarket pipe, more optimal combustion chamber design |
1/12/2023
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| 2023 Polaris Boost VR1 Stock evaluation and tuning for higher HP |
| Add 20 hp on pump gas, and even more with higher octane tunes! |
11/4/2022
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| 2021 SkiDoo Mach-Z Turbo Stock production engine dyno test results |
| Compare the Mach-Z turbo to Ace 900 turbo and the original Ace 900 |
12/5/2021
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| Turbocharged CTEC 800 "Solid Legend" turbo system on <93 octane |
| designed for high altitude riding, this system is quite happy on a bone stock CTEC 800 here at 1000 |
11/30/2021
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| 2021 Polaris 850 Patriot Single pipe dyno shootout |
| Stock vs BMP vs SPI single pipes dyno tested with stock muffler, stock Ypipe and stock ECU |
12/15/2020
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| 2020 "HK" Field Shootout 2021 zero mile dealer provided sleds |
| Cat 800 & TCat, Polaris 650 Patriot, SkiDoo E-TEC 600 & 850, Ace Turbo |
12/12/2020
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| Kevin Cameron ROLE OF RPM to the Top |
| RPM, torque, BMEP, IntakeAirVelocity, 2cycleVS4cycle, portTimingVSvalves&camTiming, BoreVSstroke, |
12/11/2020
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| 21 Polaris 850 VR1 Matrix Stock ECU vs BCM pump gas reflash |
| breakin mode vs non-breakin mode vs fade free BCM VR1 Matrix Torque Link reflash |
12/3/2020
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| 2021 Polaris 600R EFI compare Polaris EFI vs carbed vs 600RS ETEC |
| all engines dyno tested on Sunoco Surge spec fuel, still waiting for Cat 600 Snocross race engine |
11/26/2020
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| Polaris 850 Patriot measuring coolant flow through engine |
| coolant flow disparity between IQR600 and 850 Patriot, deto must be minimized, HP must be maximized? |
5/24/2020
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| 2020 Arctic Cat Ctec2 800 pipe testing on stock and trail ported engine |
| Stock engine stock pipe, SSI pipemod, D&D, SW, BMP, Jaws and higher HP AA ported w Jaws pipe |
2/27/2020
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| NY Shootout XXXI dyno certification of the 2020 shootout sleds |
| Compare Ctec800 2019vs2020, Etec 850 Etec 2019vs2020 and other observations |
12/17/2019
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| Etec 850 pipe update Stock vs revised Jaws vs new D&D |
| 2017 early production renegade tested with 91.6 (R+M)/2 pump gas |
11/11/2019
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| 2020 Arctic Cat Ctec2 800 Stock production engine dyno test results |
| 5 hours light load operation to break in the ECU, sled from Arctic Adventures' Tom Ferry |
9/1/2019
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| 850 Patriot pipe testing Trail mod 850 stock, BMP single, SSI pipe mod |
| Trying to make sense of the occasional HP fade that not all 850s experience. |
3/5/2019
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| AC Ctec 800 pipe update dyno testing with stock and advanced timing |
| Stock vs Speedwerx pipe and Ypipe, Jaws pipe and Y pipe, SSI pipe mod |
1/19/2019
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| HP required to pump H2O Hentges/ FPP Polaris 600 IQR mod |
| What power is required to mechanically pump coolant through the engine, compared with an electric pump? |
1/3/2019
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| SkiDoo Etec 850 pipes aftermarket Y pipes and single pipes |
| Jaws production hi and low elev, BMP high and low elev, DynoPort, SLP all with stock and adv timing |
12/24/2018
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| AmSnow DTR Shootout XXX Dyno certification of 2019 performance sleds |
| Cat 600, 800 & ZR9000, Polaris 600, 800 & 850, SkiDoo 600R & 850, Yamaha Sidewinder SRX |
12/13/2018
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| SkiDoo Etec 850 new Jaws Performance Pipe and Ypipe |
| compare Jaws pipe to stock pipe on pump gas, add timing with pump gas for 43 seconds at WOT = big HP |
11/11/2018
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| Precision EFI ECU reflash SkiDoo Ace Turbo and Arctic Cat Ctec-2 800 |
| low-buck improvements in 91 octane pump gas HP with Arctic Adventures and Howard's Inc |
10/25/2018
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| Hypersports HRC-4 engine 1000+ HP turbocharged snowmobile race engine |
| Craig Campton, Glenn Hall, Dan Fisher and race sled owner Scott Laskowski raise the bar at DTR |
10/20/2018
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| 2019 Polaris 850 Patriot Production Axys 850 stock evaluation |
| examining the all-new engine with Polaris engineers Darren Hedlund and Dallas Blake, and Joe DiSpirito |
9/30/2018
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| 2019 SkiDoo Ace 900 Turbo 625 mile preproduction demo sled |
| initial stock dyno test data with Billy Howard of Howards Inc SkiDoo, Arctic Cat and Kubota |
4/9/2018
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| 2018 SkiDoo Etec 850 timing and exhaust component testing |
| BMP, Dynoport, SLP and Aaen single pipes, a host of Ypipes and mufflers tested with the stock pipe. |
3/5/2018
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| SkiDoo Etec 600R 2018.5 SkiDoo MXZX Etec 600R in breakin mode |
| Arctic Adventures' new Etec 600R zero miles compared to 2018 Etec 600 zero miles + timing added |
1/31/2018
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| 2018 Arctic Cat Ctec 800 new Jaws full exhaust and Dynojet PCV |
| Stock vs full Jaws exhaust vs Jaws exhaust with stock muffler, all with optimized fuel and timing curves |
1/22/2018
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| 2018 ZR8000 Ctec tuneup maximizing pump gas HP with PCV tuning |
| optimizing fuel flow and ignition timing with a Dynojet 11-029 tuner, plus a test of the SSI stock pipe "mod"... |
12/30/2017
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| Sidewinder HP improvement D&D and Excell collaborate to make more HP |
| Excell stainless muffler, PCV with Dial-a-boost without touching ECU, then several D&D reflashes for even more HP |
12/18/2017
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| AmSnow/ DTR Shootout #29 Dyno certification of 2018 performance sleds |
| Ctec600, Ctec800, Etec600, Etec800, Axys600, Axys800, Sidewinder |
12/13/2017
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| Hypersports new record HP Hypersports Agent Orange 4.0 on methanol |
| Dave Morris' Red Cup Racing Super-Stroker Suzuki, tested as run at HayDays and with boost turned up even more |
11/5/2017
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| TCat/ Sidewinder upgrades Speedwerx mufflers w/ Precision EFI reflashes |
| Speedwerx 2.25" and 2.5" stainless quiet mufflers tested with Precision EFI stage I, II, and III ECU reflashes |
9/6/2017
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| Polaris Axys 860 big bore Excellent HP improvement from Terra Alps |
| Caputo's Performance tuned this 860 with stock exhaust and SLP single pipe on true pump gas. |
5/22/2017
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| Adding HP with ethanol dyno tuning a Cat 800 stocker with E15 fuel |
| optimizing fuel and timing for max HP with both 5% and 15% ethanol pump gas. Low buck HP improvement! |
3/5/2017
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| 2018 Arctic Cat ZR8000 new CTEC engine pre and post breakin |
| compare new ZR8000 to the AmSnow/ DTR Shootout 800+cc pre-breakin engines |
2/13/2017
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| Arctic Cat 900+cc engine 800 bigbore, dyno tested five times |
| All "big bores" are not created equally--port shapes and timing are critical as this five session evaluation indicates |
2/1/2017
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| AC 800/ SSI 950 big bore testing the effects of increased turbulence |
| A to B, .072 squish vs. .039 squish with identical 14/1 comp ratio, fuel flow and timing optimized for both. Thanks to Kevin Cameron for this test! |
1/15/2017
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| Pol CFI2 800 pipe update Stock ProR800 with Vforce 3R reeds |
| compare stock to Aaen, SLP, and new SSI titanium single pipes |
1/4/2017
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| MCX turbo Yamaha Viper MCX "270 Kit" on 91.8 octane pump gas |
| compare this 270 kit to the 190 kit (posted here 1/7/14) and to a stock Viper |
1/3/2017
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| Boondocker Turbo System Polaris CFI2 800 RMK set up for pump gas |
| Low friction ball bearing Garrett turbo, low compression RKT head = record setting reliable HP on real pump gas |
12/24/2016
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| TCat/ Sidewinder upgrades D&D Powersports' 91.8 R+M/2 octane HP |
| Stock, mod stock muffler, Tec2 muffler PCV, Tec2 muffler PCV dialaboost, Tec2 muffler dialaboost w/ reflash ECU! |
12/19/2016
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| Pol Axys 800/ 840 stroker Terra Alps' incredible pump gas hotrod |
| Could this be the 2018 Polaris Axys engine?--proven reliable, tested here with stock and Jaws single pipe. |
12/14/2016
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| 2017 Etec 850 tuning for max HP with ethanol in the fuel |
| AmSnow/DTR shootout sled tested wth 91 nonethanol and 12% ethanol fuel, various timing while still inbreakin mode. |
12/14/2016
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| AmSnow/ DTR Shootout! Dyno certification of stockers at Shootout 27 |
| 2017 Arctic Cat ZR8, ZR8, ZR9, Polaris Axys6, Axys 8, SkiDoo Etec6, Etec850, Yamaha Sidewinder |
12/10/2016
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| 2017 Polaris Axys 800 breakin session, new single pipe testing |
| Compare bone stock to SSI stainless, SPI, BMP, and Jaws...ignition timing tweaks and questions raised! |
11/27/2016
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| Hypersports' dyno session three amazing max HP race sleds tuned at DTR |
| max HP TCat, Max (!) PUMP gas HP FBomb trail Cat, Max HP Outlaw Strychnine full mod [even more to come...] |
11/22/2016
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| Sidewinder/TCat turbo Full Power Performance Fuel Manager |
| Adding the proper amount of fuel to compensate for high flow mufflers = maximum safe horsepower! |
11/22/2016
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| 2017 XF9000 turbo stock production sled from Howard's Inc |
| tested stock and with Speedwerx prototype high flow muffler, with both non ethanol and ethanol fuel |
10/4/2016
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| ZR8000 pump gas trail mod D&D "High Port" Riot Kit |
| compare the optional High Port Riot Kit to the standard Riot Kit tested on 11/22/15 |
9/24/2016
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| 2017 AC Thundercat turbo zero mile early production sled |
| Different than the preproduction Sidewinder demo sled, we explain why and show the difference in fuel flow tuning makes |
6/12/2016
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| 2017 SkiDoo Etec 850 preproduction demo sled with 1000+ miles |
| thanks to Tom Ferry of Arctic Adventures for the 850, and Jim Cooper of Cooper's S&S for BUDS2 & help |
3/16/2016
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| 2017 Yamaha Sidewinder new 998cc turbo four stroke |
| most powerful stock sled engine ever, powering the Sidewinder and Arctic Cat Thundercat! |
3/10/2016
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| 2016 SkiDoo Etec 800 low buck hopups comparing Y pipes phase 3 |
| A different, slightly more powerful stock 2016 Etec800 with D&D Ypipe and Crankshop stock donut version! |
2/21/2016
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| SkiDoo Etec 800 mods low buck hopups--Y pipe shootout Phase 2 |
| stock vs SSI stainless, Terra Alps, Crankshop, BMP, Petschke, SPI, and SPI pipe and two mufflers |
2/8/2016
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| Polaris Axys 800 HO Pipe/ Pipe mod Shootout! |
| compare stock with Aaen, BMP, SLP, SSI and Terra Alps stock pipe mods, and a great PCV fuel and timing map!!! |
12/25/2015
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| Shootout XXVI Addendum more dyno test data on Shootout XXVI stockers |
| pre and post-breakin, timing tweaks, and low-buck D&D pump gas hopups for the ZR9000 |
12/14/2015
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| AmSnow/ DTR SHOOTOUT 26 2016 stock performance sled certification |
| Dyno test: Cat 600+800+turbo, Etec 600+800, Axys 600+800, YamViper+Viper MPI turbo |
12/12/2015
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| 2016 Polaris Axys SKS 800 stock evaluation and tuned aftermarket pipes |
| 40 breakin dyno tests, then compare stock vs BMP single pipe vs SSI pipe mod vs SSI pipe mod w/ PCV tune |
11/28/2015
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| ZR8000 w/ D&D Riot Kit D&D Powersports pump gas performance upgrades |
| We dyno test each Riot Kit component separately--LTS head, Ypipe, 2 deg key, pipe, XPS muffler, Bullseyes |
11/22/2015
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| Polaris CFI2800 trail mod adding 18HP to a SLP Stage 4 engine |
| lowered compression with a head and shimmed cylinder, then spot-on tuning of fuel and spark w/ PCV |
5/31/2015
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| Fuel Volatility discussion of fuel's "front ends" |
| stale fuel is rampant, testing RVP at home, effect of volatility on combustion chamber conditions |
5/10/2015
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| 2015 Arctic Cat XF8000 cheap performance improvements |
| D&D Y pipe, stock muffler inlet restrictors, timing adjustments, add up to lots of HP for $300 |
4/1/2015
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| 2015 Axys 800HO update 3 another stocker to compare to 1-5 |
| Dave M. complained about poor performance, but was his HP goofing up his clutching, or vice versa? |
3/24/2015
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| 2015 Axys 800HO update II 5 different Axys 800s tested and compared |
| Compare Axys 800s with 0, 50, 1200, 1200 and 2200 miles--wildly different results! |
3/21/2015
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| More Axys 800 HO data Fun Unlmited's 800 HO Shootout sled |
| more questions raised by comparing new Axys #1 to new Shootout Axys to Todd's 1200 mile Axys... |
3/6/2015
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| TURBULENCE NEEDED! Kevin Cameron: turbulent vs laminar flow |
| modern thinking on maximizing HP by optimizing squish clearance and engine cooling system design |
3/4/2015
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| 2015 Axys 800HO update stock sled #1, also with 1200 miles on it |
| this is Heath's Axys originally posted on 10/7/14, has HP vastly different than the one posted yesterday... |
3/3/2015
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| 2015 Axys 800HO update stock sled #2, this one with 1200 miles |
| Todd |
3/2/2015
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| Polaris CFI2 800 upgrade RKTek Rev 2 dropin kit |
| bringing the CFI2 800 up to and beyond the performance of the new 800 HO engine, on 92 octane gas |
2/26/2015
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| 2015 Etec 800 "Post-breakin" with 30+ gal of fuel consumed |
| compare HP of this broken-in 2015 to the out-of-the-crate 2014 and 2015 AmSnow Shootout Etec 800s |
2/17/2015
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| SSI turbo Cat upgrades Speed Shop Inc. pump gas flash & muffler |
| Erich Long is back, this time with 260HP ECU reflash and 3" turbine outlet/ quiet muffler |
2/16/2015
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| FPP turbo SkiDoo 4tec new Dobeck AFR+ closed loop fuel controller! |
| Stage 4 turbo system, using AFR+ to optimize fuel, and water meth injection to make max HP on pump gas |
1/8/2015
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| 2015 Polaris IQR 600 tuning carbs and timing for MAX HP |
| new light crankshaft and VForce3R reeds--compare to previous IQR 600 |
1/1/2015
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| AmSnow/DTR Shootout XXV details of the dyno certification |
| compare 120, 150, turbo class dyno results--compare 2015 to 2014 when HP is lower or higher |
12/15/2014
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| 2015 Polaris 800HO engine 2015 Polaris Axys with the new engine |
| 77 dyno tests, test both original and an ECU with breakin mode removed, tested in 30 degree dry air |
10/7/2014
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| Yamaha Viper Excell exhaust and intake improvements |
| compare bone stock to lower backpressure muffler, and tuned airbox with outside air intake |
9/8/2014
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| Etec 800 D&D trail port Compare stock reeds vs Boyesen Rad Valves |
| also airflow/ HP improvements with preproduction Boyesen Viton sealed/ dampened/ insulated Rage Cages! |
5/8/2014
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| Polaris ProR 800 new style rubber-dampened VForce3 reeds |
| compare airflow, horsepower, and fuel tuning with 2012, 2013, and 2014 ECU calibration |
2/24/2014
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| SkiDoo 600RS modifying for maximum horsepower! |
| Various pipes, port configuration, compression ratios, target 170HP |
2/19/2014
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| DETONATION a technical explanation by Kevin Cameron |
| Causes, effects, avoidance... understanding the chemistry = better tuning! |
1/31/2014
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| 2014 Yamaha Viper MC-Xpress "190" turbo system |
| dyno tested with 91.4 octane fuel, compare HP curve to 2014 stocker |
1/17/2014
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| Supercharged Yamaha Apex Truro Recreation Centrifugal Supercharger |
| Installed by Bender Racing Canada, tuned with no clicks of detonation with 91.1 octane R+M/2!!!! |
1/9/2014
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| 2014 ZR8000 Muffler comparison, Phase 2 |
| SLP, MBRP, Speedwerx, BMP and D&D Riot Kit with Stock, D&D, and Jaws exhaust |
12/19/2013
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| AmSnow Shootout XXIV Dyno certification of the 2014 stockers |
| Cat XF6000, 7000, 8000, Etec 600 & 800, Viper vs XF7000!, Polaris Indy 600 & 800 |
12/19/2013
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| 2014 Polaris Indy 800 Boyesen Rad Valve test |
| Compare drastic difference in fuel curve from 2013-2014, compare stock reeds to Boyesen Rad Valves |
12/18/2013
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| ZR8000 stocker compare aftermarket mufflers & Jaws single |
| horspower, dB, airflow, backpressure, and appearance |
12/3/2013
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| Etec 800 pump gas mods CrankShop Essex Junction VT TrailPort |
| testing higher airflow engine with timing, fuel flow, Y pipes and single pipes on 92.7 octane |
4/11/2013
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| SkiDoo 600RS race engine FPP engine mods, Jaws high RPM pipes |
| Jake Lehnen's quest for SkiDoo 600 HP to match the Hentges /racing Polaris 600 mods |
3/4/2013
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| SkiDoo ETEC 800 turbo dealer-installed FPP pump gas trail sled |
| Full Power Performance system tested on Maine pump gas by Kevin Freeman |
2/13/2013
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| Two-Stroke Turbo Update Gus Bohne Turbo Tuning, Phase II |
| Turbo Mach Z twin, now with twin pipes, Turbo HTG 1080 triple, now with dialed in carburetion |
1/25/2013
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| Yamaha Nytro 2014? new stuff is coming--could this be it? |
| improvements in driveline technology could be the new frontier! |
12/31/2012
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| SkiDoo ETEC 800 Ypipe Petschke Motorsports custom Y pipe |
| compare stock Y pipe airflow CFM and HP vs Petschke Y pipe |
12/20/2012
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| 2012 dyno certification AmSnow/ DTR NY shootout |
| Stock 120, 150, and Unlimited sled class comparisons include SC Nytro, & turning up the boost |
12/9/2012
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| 2013 Polaris 600 IQR new mod rules call for revised port timing! |
| compare 2012 Cat, SkiDoo, and Polaris 600 snocrossers to this powerful new 2013 stocker |
11/12/2012
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| 2012 Etec 800 production Rad Valves, PCV fuel tuning! |
| rad Valves vs Stock reeds, Maxing out fuel flow with new PCV, adding more HP with pipe swap |
10/31/2012
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| AC ProCross 800 big bore Bikeman 900cc pump gas trail big bore |
| Dyno tune session with all the BMP big bore options, perfect cold weather PCV tune |
10/31/2012
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| Closed Loop EFI tuning Pinnacle Performance piggy-back controller |
| assess response time to achieve commanded A/F ratio, and assess accuracy |
9/5/2012
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| Coolant flow testing SkiDoo 600 with and without CPC couplers |
| those harmless looking quick couplers can sap your performance if installed improperly! |
7/30/2012
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| Polaris 600 SnoX Engines the evolution of the Hentges Racing 600 mods |
| documented HP improvements each year from 2006-2012 |
5/16/2012
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| SkiDoo ETEC 800 Boyesen Rad Valve test |
| compare stock reeds airflow CFM and HP to Boyesen Rad Valve reed cages |
5/10/2012
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| 2012 SkiDoo Etec 800 compare HP with various ECU tuning |
| breakin vs nonbreakin, vs 2013 reflash, vs tweaking timing for max HP, cold engine vs hot engine |
4/29/2012
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| 2012 F1100T UPGRADES JD Powersports ECU reflash and exhaust |
| test JDP 4 switch selection tunes with stock muffler, quiet trail muffler, and 3" ID lakerace exhaust |
1/29/2012
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| Yamaha Apex/ Yamacharger stock Apex with inexpensive light boost tune |
| compare stock Apex to Yamacharged Apex with stock, MBRP, and Bender mufflers plus PCV added fuel |
1/20/2012
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| Etec 800 turbo Full Power Performance trail turbo system |
| big power increases shown with 3, 5, 7, and 8 psi boost. More left on the table! |
1/19/2012
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| Trail Mod ProCross 800 This is the sled D&D ran at the '11 Shootout |
| D&D trailport hotrod package and quiet exhaust, tuned to max power on pump gas! |
1/2/2012
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| two stroke Turbo Trilogy Gus Bohne turbo systems on three engines |
| DNE 1700 quad, Mach Z 1000 twin, HTG 1080 triple--record HP is made on this day! |
12/30/2011
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| Z1/ F1100T tuning turbo Dynamics ECU reflash/ 4 switch tuner |
| maximum pump gas HP with pump gas/ water methanol injection to suppress detonation |
12/14/2011
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| Yam Apex HP improvements D&D Powersports inexpensive mods |
| increase airflow and HP with exhaust and intake mods plus excellent PCV fuel tuning |
12/13/2011
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| 2011 Adirondack Shootout stock 2012 model dyno certification |
| compare all 120hp class & 150hp class sleds torque and hp with fuel tuning information |
12/12/2011
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| 2012 SkiDoo 600RS stock snocross 100 octane race engine |
| compare 2012/early engines, comments by CrankShop engine modifier Will Doe |
11/20/2011
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| 2012 Arctic Cat 800/925 RK Tek 925cc big bore on pump gas |
| incredible HP-- compare RK Tek big bore with perfect tuning, stock vs D&D single pipe |
10/29/2011
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| Yamaha Nytro Turbo Full Power Performance trail turbo system |
| all stock engine-- create incredible HP by matching octane to boost, with accurate fuel tuning |
10/28/2011
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| XF1100T Outlaw Drag Sled the DTR Horsepower record is eclipsed again! |
| we learn what it takes to increase the stock engine's 180HP to over 600HP! |
10/13/2011
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| 2012 Cat ProCross 800 stock evaluation & asphalt dyno tune |
| compare 2011 vs 2012, fuel tweaks, timing tweaks, backpressure tweaks, Boyesen Rad Valves |
8/27/2011
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| Z1 turbo dragracer D&D "Magic" engine and turbo system |
| Eight HP per cubic inch is doable with proper parts and tuning! |
7/3/2011
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| Snowmobile Emissions EPA rules and test procedures |
| explaine by Ryan Hayes, Arctic Cat Inc. Engine Development/ Calibration Engineer |
6/30/2011
|
| Critical dyno test data peak HP RPM vs average pipe gas temp |
| using test data to create best acceleration with no guessing! |
3/27/2011
|
| DNE 1700 radar run sled upgraded to turbo boost |
| new DTR torque record, more to come when we rev it over 6500 next time |
3/23/2011
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| SkiDoo XP800R trail mod Boyesen Rad Valve test |
| compare stock reeds to Boyesen rad valve cages |
3/16/2011
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| 2011 Polaris ProR 800 Pipe Shootout, and cheap engine mods |
| Compare stock to Aaen, BMP, DynoPort, SLP then raise cylinders with a shim kit and hang on! |
3/14/2011
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| 2010-11 Crossfire 800 compare stock reeds vs Boyesen Rad Valves |
| airflow % increase = horsepower % increase |
2/19/2011
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| SkiDoo ETEC 800 losing HP after some period at WOT? |
| analysis of previous dyno test data may explain the phenomenon |
2/18/2011
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| AC Crossfire/ M1000 Y pipe and single pipe shootout! |
| compare stock to BMP, D&D, SLP, and Speedwerx |
2/9/2011
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| Crankshop 1500 triple The most powerful triple two stroke at DTR |
| Compare early "10" pipes to more powerful "22" pipes |
2/3/2011
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| 2010 Adirondack Shootout AmSnow/ DTR shootout sled dyno certification |
| compare torque and HP of all the 600/ 800 class sleds at this year's shootout at Woodgate, NY |
12/22/2010
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| Crossfire 800 turbo Boondocker turbo system on D&D 901 |
| Glenn Hall dyno tunes this big bore crossfire to max HP for hillgragracing, lakeracing |
12/5/2010
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| Modern dyno technology recording data 100x per second |
| reading between the lines of a typical dyno test on our Crossfire 800 pipe shootout |
12/5/2010
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| 2011 new, stock 800s eastern sled dealers' "real world shootout" |
| Arctic Adventures, Livingston Arctic Cat, Victory Motorsports with zero mile 800cc sleds |
12/3/2010
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| Polaris ProR800 "tuneup" shimming cylinders to match the D8 |
| compare airflow SCFM stock vs cylinders raised to make ProR800 port timing = Dragon 800 |
12/3/2010
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| Arctic Cat Crossfire/M800 single pipe Shootout, session 2 |
| SLP Crossfire/ M800 pipe tested, new BMP Y pipe compared to stock and D&D single |
11/28/2010
|
| 2010 Polaris Dragon 800 final April flash fuel flow vs prior flashes |
| also compare stock vs. CPI twin pipes |
11/27/2010
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| Arctic Cat Crossfire/M800 single pipe Shootout |
| compare Ypipes, single pipes to see who has best torque, best HP on pump gas |
11/16/2010
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| 2011 Polaris Pro R 800 production sled stock evaluation |
| compare ECU with and without breakin mode, lean out fuel flow for max power |
11/8/2010
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| Arctic Cat Z1 turbo Turbo Dynamics ECU tuning/ upgrades |
| Max power on pump gas with large intercooler, high flow exhaust, and ECU reprogramming |
9/28/2010
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| 2011 Yamaha Apex preproduction sled w/ EXUP |
| detailed HP/TQ comparison w/ 2010, and Kevin Cameron explains EXUP |
9/11/2010
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| Z1 Turbo Lakeracer D&D Powersports's latest HP upgrade |
| bigger turbo, intercooler, extra injectors, cnc porting, turbo cams, etc etc |
7/23/2010
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| 2011 Polaris Rush 800 preproduction stocker compare to Dragon 800 |
| different HP curves, influenced greatly with Power Commander V tuning |
4/15/2010
|
| SkiDoo 4tec header update testing the new Hindle Exhaust System |
| Use the PCV to tune Hindle vs MBRP vs DynoPort quiet muffler for maximum horsepower |
3/26/2010
|
| Yamaha Nytro Exhaust Hindle tuned header and muffler system |
| compare bone stock Nytro vs stock header & Hindle muffler, Hindle header & stock muffler, Hindle header & Hindle muffler |
2/27/2010
|
| 2010 Dragon 800 annoyingly lean midrange, and goofily fat WOT |
| DynoTechJim's theory of causes of the infamous stumble, and possible ways to rectify |
2/21/2010
|
| 2010 1/2 SkiDoo Etec800 Great power with low emissions! |
| test data stock, BMP Y pipe, DynoPort single pipe, more power to come when we can manage fuel flow.... |
2/20/2010
|
| Polaris FST turbo performance improvements on pump gas |
| stock 07 vs 08, then ELA muffler, Racecraft intercooler, Martin Filfe ECU reprogramming |
12/27/2009
|
| AmSnow/ DTR Shootout XX certification dyno test data and comparison |
| Rush, Etec, F6, Vector EFI, D8, XP800, F8, Apex, XF1000, Z1, Nytro, Cat SnoPro500 |
12/15/2009
|
| another DTR HP record Justin Durand's Vmax4 custom turbo system |
| spring steel reed petals, no more signs of fiber reed breaking/ burning |
12/13/2009
|
| SkiDoo 4tec 1200 header and muffler upgrades |
| compare stock w/ Straightline, MBRP, Crankshop-DynoPort headers, various mufflers, fuel tuning with Power Commander V |
12/4/2009
|
| 2010 AC F8 vs X Fire 800 compare stock HP, and with D&D exhaust |
| F8 stock vs Crossfire stock, then both with D&D Y pipe and D&D single pipes, stock factory muffler |
11/30/2009
|
| 2010 Arctic Cat F8 our first production sled on day two |
| tested stock, with PCV leaned mixture, D&D Ypipe, and D&D single pipe |
11/26/2009
|
| Crankshop SkiDoo XP800R trail mod, ported and with CS exhaust |
| dyno test data optimizing fuel flow with our own pump gas for max HP, compare to DynoPort XP800 trailmod |
11/17/2009
|
| 2010 Arctic Cat 800 first production sled |
| baseline testing from 100 degree coolant temp, through 130+ degree coolant temp |
11/6/2009
|
| SkiDoo 4 Tek 2010 Full Power Stage II on pump gas |
| lower compression forged turbo pistons allow greater power and durability |
10/31/2009
|
| Polaris Dragon 800 used 09 upgraded to 2010 specs, final recall |
| stock, compared to BMP, SLP, and DynoPort pipes plus tuning fuel with new Power Commander V |
10/15/2009
|
| Vmax 4 w/ Garrett Turbo our fourth 500+ HP dyno tune |
| Justin Durand tunes his radar run sled up to 30 psi boost, more to come |
9/21/2009
|
| N.A.N.O. Nitrous Oxide DynoPort XP800 single pipe mod engine |
| adding 50 HP per hole is sort of easy with constant 900 psi N2O pressure from full bottle to empty |
7/23/2009
|
| D&D 901 big bore twin installed on 2010 Xfire 800 |
| compare stock 2010 F/M/Xfire 800 with added 100cc bigger bore D&D kit on pump gas. |
5/20/2009
|
| One Stop Performance Apex the third member of the DTR 500 HP club |
| world record ET/ MPH dragracer requires world record HP. we help OSP tune for even more. |
5/5/2009
|
| D&D's Z1 Turbo Upgrades new DTR pump gas HP record |
| larger turbo/ intercooler, supplemental fuel, water/ methanol injection to create ultimate pump gas performance |
5/3/2009
|
| 09 Arctic Cat SnoPro 600 compare to SkiDoo and Polaris SnoX 600's |
| dyno test data optimizing fuel flow and timing for max HP |
4/28/2009
|
| 09 Dragon 800 "Reflash" Casey Mulkins' stocker with reflash |
| Stock, SLP, BMP, DynoPort ex, PCIII mapping, reduced compression ratio, BMP ported cylinder |
4/5/2009
|
| Power Commander 3 Map Stock Dragon 800 w/ 1/31/09 reflash |
| maximum HP on pump gas w/ SLP exhaust (160 plus) |
3/17/2009
|
| 2010 Arctic Cat F8 preproduction sled stock evaluation |
| technical info plus compare HP curve w/ all 2008 800 twins |
3/6/2009
|
| SkiDoo XP800R trail/ lake race mod engines |
| compare 09 XP800 stocker to DynoPort trail port 800 and Bikeman Performance 880 big bore |
2/28/2009
|
| Arctic Cat Z1 turbo D&D HiJacker boost/ fuel controller |
| we take the Z1 to the limit of 91 octane pump gas, then go to the max of the turbo with race gas |
2/8/2009
|
| 09 Crossfire 800 tuneup D&D shim kit/ Y pipe/ Single pipe |
| compare stock vs shimmed cyls, stock vs D&D y pipe, stock pipe vs D&D single pipe |
1/18/2009
|
| 08 Polaris Dragon 700 latest reflash December 2008 |
| compare stock vs SLP and DynoPort Pipe, then lean out with PCIII to significant HP, 10 pages |
1/2/2009
|
| 09 AC Crossfire 1000 stock evaluation and bolt-on mods |
| compare box stock vs BMP Ypipe, BMP single pipe, Boyesen Rad valves, big air intake |
12/19/2008
|
| 09 SkiDoo 4Tek stock production sled from CJ Mororsports |
| compare to preproduction, also with Full Power Perf tuned header and higher flowing mufler |
12/16/2008
|
| 09 Production Z1 turbo bone stock evaluation |
| compare cool intercooler during high speed vs hot intercooler during low speed WOT operation |
12/7/2008
|
| Boosted Yamaha Nytro turbocharging vs supercharging |
| compare Ulmer/ Turbo Conncetion turbo system vs. Mountain Performance supercharger |
11/23/2008
|
| Yamaha Nytro upgrades Ulmer Racing N.A. performance improvements |
| airbox mods, filters, Excell three-one header, glasspack muffler |
11/12/2008
|
| 09 Dragon 800 Switchback unusually lean and powerful Dragon 800 |
| perhaps some sort of anomaly, excellent stock HP without the aid of a PCIII or Boondocker..... |
11/1/2008
|
| 09 Pol Dragon 800 prod. fuel tuning w/ new Power Commander PCIII |
| stock baseline, plus many iterations of pipes/ mod pipes/ mufflers/ etc (more will be forthcoming) |
10/5/2008
|
| SkiDoo 4Tec 1200 exhaust system upgrades |
| Full Power Performance tuned header with stock muffler/ FP muffler, |
9/7/2008
|
| SkiDoo 4TEK Trail Turbo Full Power Stage II turbo system |
| six HP printouts, boost adjusted for 87 octane and up to 108 octane, and steps in between |
7/28/2008
|
| NEW DTR HP/TQ RECORD D&D/ Boondocker F1200 turbo dragracer |
| Custom race turbo system, larger turbo, lots of boost and six injectors worth of high octane fuel |
7/25/2008
|
| 2009 Arctic Cat Z1 Turbo preproduction stock evaluation |
| pump gas stock & w/ high flow muffler & added boost w/ D&D control, plus 100 octane tune, 110 octane tune |
7/14/2008
|
| SkiDoo 4Tek trail turbo Full Power Performance turbo 87 octane tuneup |
| compare lowest boost pump gas setting to higher boost setting |
6/26/2008
|
| Turbo SkiDoo 4Tek custom lake race turbocharger system |
| bone stock engine tuned with race gas and boost pressure |
6/18/2008
|
| Factory stock SnoX racers Polaris 600IQ and SkiDoo 600RS |
| compare HP/TQ curves when tuned to max power, compare BSFC |
6/10/2008
|
| Arctic Cat 2008-9 F8 stock engine evaluation |
| compare F8 to SkiDoo XP800 and Polaris Dragon 800, all bone stock as delivered |
6/8/2008
|
| Polaris Dragon 800 tested with final 09 calibration ECU |
| compare 08.5 cal to 09 cal, compare stock exhaust to BMP mod stock single and SLP single/ Y/ Can muffler |
5/1/2008
|
| SkiDoo 4Tech 1200 2008 SkiDoo demo sled |
| part throttle fuel consumption, full throttle HP, compare HP/ TQ to Yamaha Nytro, |
4/8/2008
|
| 08.5 Polaris Dragon 800 stock evaluation with aftermarket pipes |
| compare stock vs SLP single vs BMP modified stock pipe |
3/31/2008
|
| ETEC vs SDI 07 & 08 meaningful airflow and HP comparisons |
| thanks to Kevin Cameron, Sean Ray, Jim Cooper and Billy Howard for trying to solve this mystery |
3/28/2008
|
| Yamaha SRX/ SXR triples Bender big bore 835/ 800 |
| modernizing the 2000 era Yamah triples to modern HP and performance, low total buck, big output |
3/27/2008
|
| one more09 SkiDoo 600ETEC Billy Howard's "broke in" demo sled |
| my new $600 airflow meter might help answer the question--"where's the HP?" |
3/23/2008
|
| 2007 Adirondack Shootout SnowGoer/ SnowWeek/ DTR Shootout |
| actual test data obtained during the 18th annual Shootout dyno certification |
3/9/2008
|
| New DTR all motor record HTG XCR1640 four cylinder lake racer |
| textbook tuneup, added 99 HP in three hour tuneup |
3/8/2008
|
| XP800R pipe shootout 08 SkiDoo XP800R stock engine |
| tested bone stock with tuning, then Aaen, CPI, and DynoPort single pipes, plus DynoPort and BMP Y pipes |
2/25/2008
|
| 2009 SKIDOO 600 ETEC STOCK DYNO TEST RESULTS |
| after six hours of run time, HP, fuel flow, BSFC (record low at part throttle) A/F ratio (record low reading) |
2/17/2008
|
| NEW DTR HP/TQ RECORD DNE 1725 Quad, now with N2O injection |
| Tommy McConkey's radar run engine, dyno tested NA and with DNE's semi-direct N2O injection |
1/26/2008
|
| Pipe Center Section Temp critical for exact clutch tuning |
| stock 800HO w/ BMP single, Cudney head, V Force reeds tested with cool, warm, hot pipe temperature |
1/21/2008
|
| SkiDoo XP800R stage tune stock 800 with aftermarket bolt-ons |
| Bondi airbox, Bikeman Ypipe, Bikeman billet head, Boyesen Rad Valves, Boyesen X wings, timing, jetting |
1/20/2008
|
| SnowWeek/ DTR Shootout 600 class and open class stockers |
| Graphs only, showing representative HP curves of all stockers at 18th annual SW/DTR Shootout |
1/1/2008
|
| 08 Yamaha Nytro Excell exhaust system horsepower improvements |
| compare stock header with and without muffler, to Excell header/ mufflers/ fuel tweaks/ timing tweaks |
12/31/2007
|
| Yamaha Apex CPR turbo stock Apex with Simons front mount turbo |
| compare lowest boost pump gas setting to higher boost setting |
12/13/2007
|
| SnowWeek/DTRshootout trail and lake mod entries |
| MPH and ETs of trail mods 1000ft and lake mods 660 ft |
12/7/2007
|
| F1000 pipe comparison aftermarket Y pipes/ single pipes/ cans |
| compare stock exhaust with Speedwerx, D&D, and Bikeman exhaust components |
11/28/2007
|
| ZR900 trail modifications Tom Mango |
| pump gas tuning with mods/ parts cherry picked from five different companies |
11/9/2007
|
| Stock Polaris Dragon 700 BMP modified stock pipe evaluation |
| compare stock exhaust with Bikeman Performance modified stock single pipe, BMP lightweight muffler |
10/31/2007
|
| SkiDoo Rev 800 trail mod CJ Motorports 860 pump gas big bore |
| pump gas modifications including head, porting, pipe mod, airbox, timing |
10/31/2007
|
| Mach Z reed dyno test trail ported w/ Crankshop twin pipes |
| compare stock reeds/ cages with Boyeson Rage Valve reeds/ cages |
10/27/2007
|
| 08 Yamaha Nytro stock evaluation |
| compare stock vs reduced exhaust backpressure |
10/2/2007
|
| Yamaha APEX drag engine MPI supercharged w/ methanol fuel |
| big bore, stroker w/ Autronics fuel/ spark management built by Woody |
9/24/2007
|
| D&D F12 Boondocker turbo New DTR two-cycle record once more |
| dyno test results of Glenn Hall/ Jason Stoviac's Firecat with this supremely powerful F1200 boosted engine |
6/13/2007
|
| D&D F1200 N2O engine new DTR two cylinder HP record |
| Jason Stoviak and Glenn Hall using D&D & Boondocker N2O to eclipse the DTR two cylinder record |
4/16/2007
|
| 2008 SkiDoo MXZ 800R X stock dyno and weight evaluation |
| test data of preproduction unit compared to rev800 DPM early model, plus our own digital scale numbers |
4/11/2007
|
| new boosted DTR record Full Power Performance Stage IV RX1 turbo |
| details of engine mods, incredible HP for 61 cubic inches, FPP 716-699-6299 |
3/21/2007
|
| Dead 1 Dave's F1000 HTG lake race porting w/ D&D pipes |
| compare D&D Y and D&D single pipe with new D&D twin pipes, all lake race Boondocker tuning |
3/21/2007
|
| F1000 pump gas big bore D&D F1200 big bore kit |
| tested on pump gas with D&D single pipe and D&D twin pipes |
2/19/2007
|
| Mach Z Boondocker N2O Boondocker N2O system with 91 octane gasoline |
| regulated Nitrous Oxide delivery pressure for constant HP added regardless of cylinder head pressure |
2/13/2007
|
| Trail mod dyno tuning Mike Gray800HO, BigJohn840, Jason Owen F8 |
| three trail mods in the same trailer, before and after dyno tuning on one day in January. |
2/4/2007
|
| SkiDoo 600SDI single pipe comparison, head modification |
| compare stock pipe to Bikeman modstock, DynoPort, Straightline plus more HP with less compression |
1/24/2007
|
| 07 Polaris Dragon 700 stock evaluation and trail mod |
| stock with SLP and HTG singles, HTG trailport with stock pipe, SLP single and HTG single |
1/11/2007
|
| Mach Z ECU comparison... compare 06 to 07 fuel flow and HP at WOT |
| 06 sea level compared to 07 sea level, 07 medium altitude, and 07 high altitude calibrations (= high HP) |
1/5/2007
|
| 06 SnowWeek/DTR Shootout stock sleds dyno certified here |
| stock sleds uncrated and dynotested to ensure stockness, compare cool pipe to hot pipe |
12/26/2006
|
| MPI SC Apex session two Art Andre's sled with fuel upgrades |
| larger capacity fuel pump, Boondocker boost and RPM referenced EFI controller |
12/22/2006
|
| new NA DTR HP record DNE 1725cc four cyl two stroke race engine |
| Tommy McConkey |
12/20/2006
|
| Yamaha Apex w/ N2O Boondocker EFI nitrous system evaluation |
| stock engine vs two three hole nozzles vs two five hole nozzles, all pump gas safe for short blasts so far... |
12/14/2006
|
| 06 SW/DTR SHOOTOUT some trail/ lake mod entrants' dyno numbers |
| HTG IQ600, C&J HO860, BMP F1000, HTG pump gas 1200 edge, HTG race gas 1200 edge |
12/11/2006
|
| 07 Cat F8 Trail Mod D&D ported F8 on pump gas |
| tested with stock Ypipe stock pipe, D&D Ypipe stock pipe, and D&D Ypipe D&D single pipe stock muffler |
11/29/2006
|
| Yamaha Apex Supercharged MPI supercharger kit on stock Apex |
| 12 psi boost on stock engine with 100 octane gas, Excell stainless muffler |
11/28/2006
|
| Trail mod Firecats one F7, one F8 best stock muffler performance |
| Bikeman F7 trailport with Bikeman mod stock pipe, Best Perf F8 trailport stock cyls with BM Fatazz pipe |
11/15/2006
|
| RK Tek SkiDoo 827 twin Fred's pump gas trail mod |
| tested with four single pipes, Bondi airbox, max HP for 20 seconds at WOT on pump gas |
11/14/2006
|
| 07 F1000 trail mod D&D trailport F1000 on pump gas |
| compare D&D ported engine, stock pipe stock muffler, D&D pipe stock muffler, D&D pipe D&D muffler |
11/10/2006
|
| 07 Yamaha Phazer stock evaluation with some air intake mods |
| tweaking the new four stroke twin to optimize A/F ratio and HP. |
9/12/2006
|
| 07 IQ 600 EFI pipes compare single pipes |
| stock pipe/ vs DynoPort pipe/ vs Bikeman modded stock single pipe |
9/2/2006
|
| 07 Polaris EFI IQ600 stock evaluation |
| compare cool ipe graph vs hot pipe graph; this will help your clutch tuning |
9/1/2006
|
| Mach Z twin 1250 big bore Bikeman kit with oversize cast cylinders |
| Billy Howard's dyno test results, variuos Boondocker tuning, and full blast of Boondocker N2O |
8/24/2006
|
| 2007 Arctic Cat F1000 2007 Arctic Cat F1000 stock evaluation |
| tested bone stock and with D&D Bullseye modded airbox inlet plus D&D stamped Y pipe |
8/23/2006
|
| 2007 Arctic Cat F1000 jpeg graph of t data included in text article |
| bone stock vs mod air intake vs D&D Y pipe |
8/22/2006
|
| Big Bore Fusion 600/660 Sean Ray's 660 tested with single pipes/ cans |
| stock pipe/ stock muffler vs aftermarket singles/ cans also Bikeman modified stock Fusion 600 pipe |
8/6/2006
|
| Big Bore Fusion 600/660 Graph of stock exhaust vs other pipes/ cans |
| experiment, trying to figure out how to get jpeg files into DTR articles |
8/5/2006
|
| 06 Polaris Fusion 600 low buck HP improvements, Aftermarket singles |
| reeds, airbox mods, aftemarket single pipes, Bikeman stock pipe mod, head cut, all on pump gas |
6/6/2006
|
| 06 Yamaha Apex Turbo Boondocker GT28RS upgrade turbo kit |
| sidemount location, dyno tested with 9-1 forged pistons, 12.5 to 27 psi boost dyno results |
5/22/2006
|
| 06 SkiDoo Rev800 single pipe comparison, trail port with Bikem |
| test stock/ stock pipe vs stock/ Bikeman pipe vs Bikeman trail port with BMP single pipe, all with stock quiet muffler |
5/8/2006
|
| 2007 Arctic Cat Jaguar Z1 all-new 1100 four-stroke twin |
| JD Powersports' new stocker, pre-breakin, pre-turbo |
4/22/2006
|
| Turbo Polaris Twin 700 w/ HTG cast cyls, HTG turbo porting |
| model 66 Aerodyne turbo tuned on dyno for max HP on 990 twin for 660 feet dragracing, new 2 cyl DTR record |
3/16/2006
|
| 05 Mach Z trail mod HTG ported pump gas engine w/ CS twins |
| tested with Vforce reeds, stock reeds, then a blast of Compucar N2O--check out the airflow CFM |
3/6/2006
|
| 05 Mach Z trail mod stock reeds vs VForce3 reeds |
| compare airflow CFM and HP of reeds on HTG trail ported MachZ, Crankshop twin pipes |
3/6/2006
|
| Arctic Cat 660 turbo tuning for much greater pump gas HP |
| JD Powersports' dynotech research tuning session |
3/5/2006
|
| boondocker carbed N2O assessing fuel flow/ time/ HP |
| float bowl pressure rise is slow, compromises in tuning are necessary for engine survival |
2/19/2006
|
| boondocker carbed N2O boondocker's carbed N2O fuel flow analysis |
| steady state dyno, NA vs button pushed, check time seconds vs fuel flow rise/ HP rise and drop |
2/19/2006
|
| 800 SkiDoo 830 big bore Tweener SkiDoo 830 big bore revised dyno data |
| last test baseline w/600 pipe/ vs revised specs w 800 pipe/vs Boss noss N2O stock and modified |
2/18/2006
|
| SkiDoo800/830 big bore update info on Randy Haulman's 830 twin |
| porting/ compression tweeks, back to stock 800 pipe, Boss Noss N20 stock and with modified N2O delivery |
2/18/2006
|
| 04 F8 EFI tuning session Bikeman F8 w/ Bikeman mod stock single pipe |
| four Boondocker maps, four dyno results safe for 87 octane to 93 octane, long or short runs |
2/17/2006
|
| HTG XCR1200 HTG's Shootout Sled, Edge/ XCR1200 stroker |
| this is the current DTR pump gas king, just what it takes to go 0-117 in 8.6 seconds in a full bodied trail sled |
1/26/2006
|
| Fusion 600/660 big bore Rex Ray's Fusion 600 fitted with 700 pistons |
| Sean Ray's project sled tested with stock pipe and muffler, tuned to max pump gas HP |
1/23/2006
|
| Fusion 900/ HTG 975 Fusion 900 w/ overbored stock cylinders |
| HTG 975 tested with HTG single pipe, Boondocker nitrous oxide tested separately |
1/18/2006
|
| Polaris Fusion 900 Fusion 900 single pipe comparison |
| stock pipe vs SLP single vs Dynoport single, stock muffler vs SLP muffler vs Dynoport muffler, Dynoport Y |
1/17/2006
|
| DynoTech certification 05 SnowWeek/DTR Adirondack Shootout |
| compare all 600 class engines, compare all unlimited class engines, compare SkiDoo supplied hot ECUs |
1/12/2006
|
| 05 F7 EFI bone stock non-Boondocker single pipe options |
| text & dyno data, stock pipe vs Speedwerx pipe vs Bikeman modstock pipe, SW Can vs stock Muffler |
12/31/2005
|
| 05 F7 EFI bone stock non-Boondocker single pipe options |
| GRAPH stock pipe vs SW pipe SW can vs SW pipe stock muffler vs Bikeman mod stock pipe stock muffler |
12/30/2005
|
| 05 Cat F7 carbureted Text & Data on F7 (overlay graph below 12/17) |
| stock vs D&D F7 monster single vs Bikeman modified stock pipe, torque & HP |
12/18/2005
|
| 05 Cat F7 carbureted single pipe options with quiet stock muffler |
| Stock pipe vs two runs D&D Monster F7 vs two runs Bikeman modded stock pipe, all w/ quiet muffler |
12/17/2005
|
| Polaris Dragon 800 2009 stock evaluation w/ aftermarket tuning |
| compare box stock with proper tuning, various pipe combos. |
12/5/2005
|
| SkiDoo MXZ800 twin RK Tek 827 (830cc) big bore TEXT & DATA |
| tested with quiet stock pipe, compare stock vs bored carbs, all pump gas |
11/21/2005
|
| SkiDoo MXZ 800 Stock MXZ800 vs. RK Tek 827 Big Bore |
| stock pipe/ stock muffler on both engines, graph only, tesxt to follow |
11/20/2005
|
| 04 F6 Carbed Firecat stock EV opening RPM is way too late |
| graph of stock curve vs stock EV locked open vs normal EV operation and D&D Monster F6/7 single pipe |
11/10/2005
|
| 04 carbed F6 Arctic Cat dyno tuned to max, pipe comparison |
| test data stock tuned to max, lock EX Valves open, then new D&D monster F6/F7 single with stock muffler |
11/10/2005
|
| 05 Mach Z Trail Mod Chuckaroo Motorsports trail mod mach Z |
| Extensive trail porting, 12.5/1 compression, Dobeck EFI controller, Crankshop quiet twin pipes |
11/2/2005
|
| 05 Mach Z trail mod GRAPH Chuckaroo Motorsports 203-943-3344 text 11/2 |
| CMS trail porting, 12.5/1 lake race domes, Crankshop Twin pipes, Mark Dobek |
10/31/2005
|
| DDF9ss vs Glenn's F7 Monster Singles and Boondockers on both |
| you must observe the overall HP curve and fuel floow (lower right part of graph) |
10/26/2005
|
| D&D F9ss/ Monster Single quiet stock muffler, boondocker tuned |
| graph on lower right is fuel flow lb/hr, note difference in RPM HP peak with different fuel flow |
10/26/2005
|
| DD F9ss w/ monster single tuning with boondocker for trail/ lake race |
| also Glenn Hall's very evil F7 single pipe lake racer, tested with Monster Single, 110 octane, Boondocker |
10/25/2005
|
| "hot" 04 F7 EFI stocker graph only of various exhaust configurations |
| stock exhaust, D&D ypipe with stock tuned pipe, D&D ypipe with Bikeman mod stock pipe, test on 10/23 |
10/24/2005
|
| F7 EFI "hot" stocker stock baseline vs quiet pipe mods |
| D&D Ypipe, Bikeman modified stock single, then a set of Bikeman trail ported pump gas cylinders!! |
10/23/2005
|
| Graphic Comparison stock header vs Excell Motorsports header |
| Graphic comparison of airflow CFM vs HP |
10/20/2005
|
| 05 Vector stock tuneup stock header vs Excell Motorports 3-1 header |
| check out airflow CFM as it relates to drastically altered HP curve, all with zero sound increase |
10/19/2005
|
| Graph of RX1 vs APEX horspower curve graphic comparison |
| RX1 is average of Bender's fisrst 10 runs, Apex is our first 2 runs, note HP shift at 7750 |
10/18/2005
|
| 2006 Yamaha Apex 2006 Yamaha Apex stock dyno evaluation |
| tested stock and also with Excell Motorsports New Generation center outlet muffler |
10/16/2005
|
| F7 tested with 03-06 ecus scott norine's wife's 04 as a guinea pig |
| 03,04,05,06 ecu plus D&D Ypipe, Monster single, added timing |
9/30/2005
|
| 2006 Fusion 600 Stage II adding airflow CFM and adding HP |
| ported carb boots, larger bore carbs, higher compression pump gas head...... |
9/18/2005
|
| '06 Polaris Fusion 600 Sean Ray's dad's brand new sled here today |
| break in, the dial carbs in to perfection, then adding even more CFM & HP with Sean's airbox mods |
9/17/2005
|
| F7 Carb SFD tuneup files free Windyne software wwww.superflow.com |
| use windyne software to do graphic comparisons of these tests, same as we use here |
9/1/2005
|
| F7 carb further tuneup nipped head, Bikeman stock pipe, D&D Ypipe |
| this is an 11 test tuneup, highlights show various combos that can add up to 150+ HP |
8/31/2005
|
| Rx1 Turbo Drag Sled Bender Stage 3, 1000cc discplacement |
| low compression pistons, forged rods, gonzo ball bearing turbo w/ gonzo boost on race gas |
8/18/2005
|
| FIRECAT F9 |
| Bikeman Performance Big Bore Stock Stroke tested with single pipe, SLP twins, D&D twins |
8/12/2005
|
| Tom Pechler's XCR600/800 dyno tuned today by Tom's wife Kim |
| Tom's stationed in Iraq, watched the dyno session live on internet, with this he can get the SFD files and see results |
4/27/2005
|
| Firecat F9 evaluations D&D Powersports F9 and F9ss |
| F9 tested with twin pipes, F9ss tested with new Monster single pipe and importantly quiet stock muffler |
4/12/2005
|
| dyno testing oil BLUE MARBLE vs. POLARIS INJECTOR OIL |
| stock XLT600 triple, baseline tested with Polaris oil, then treat and switch to Blue Marble, then back to Polaris oil again |
4/4/2005
|
| SkiDoo800 twin tuneup DynoPort pipe, Bender can, HTG port, ign tmng |
| Cooper Sales & Service SkiDoo 440rev/ 800x transplant, tuning from 142 to 157 HP |
4/1/2005
|
| 05 Mach Z trail ported DNE Performance Mach Z tuneup |
| also some very violent DNE radar run engines--1234cc quad and a quadzilla 1563 all-engine record breaker at DTR |
3/7/2005
|
| 05 Firecat F7 EFI D&D twin pipes fitted to stock OEM muffler |
| compare torque, HP, airflow CFM between stock single pipe and new Twins |
2/17/2005
|
| '05 Polaris IQ 440 a broad powerband, nearly 4 hp/ cu. in. |
|
2/14/2005
|
| HTG Polaris XCR1080 Tom Tyson's wicked pump gas trail sled |
| upgraded with new HTG High Volume quiet trail pipes |
2/11/2005
|
| BikeMan EV Spacer kit Carbed F7 tested before and after.... |
| excellent midrange Airflow CFM and HP improvements |
2/4/2005
|
| 04 SnowWeek/ DTR Shootout dyno test rsults of Shootout sleds |
| here are the actual numbers of stock sleds prior to woodgate field shootout, thank you SnowWeek |
1/30/2005
|
| SkiDoo trailmod twins 600/734 bigbore, 800 Bondi, 800/830 bigbore |
| pump gas skidoo twins, this time with correct 830 data with corrected ignition timing |
12/28/2004
|
| 05 F7 tuneup data one carbed 05 w/ n2o, one "blueprinted" EFI |
| broken printer, no 3.5" discs, this is the easiest way to get these guys their data, plus it is interesting... |
12/25/2004
|
| SFD files PX800 and ZR900 pump gas dyno results, ProX800 and ZR900 |
| SLP trail mod single pipe, SLP stock engine twin pipe ZR900 Cat |
12/23/2004
|
| Arctic Cat Potpourri meaningful Cat dyno test results |
| D&D F8 stock single pipe, new D&D twins, D&D 1010, 05 F7-- stock, added timing, reduced fuel psi, Stumpy's 04 F7 w/ key, dropped fuel psi, Thing can |
12/8/2004
|
| 05 SkiDoo MachZ first dyno test, after breakin hours |
| this is the test we did during our inaugural LSV session |
12/5/2004
|
| 05 SkiDoo MachZ SFD file cool engine, hot pipe |
| more details coming this PM |
12/5/2004
|
| 2005 Polaris Fusion SuperFlowData (SFD) files |
| dyno test data stock, various airbox mods |
11/28/2004
|
| 2005 Polaris Fusion STOCK DYNO EVALUATION |
| fine tuning airbox for maximum stock HP rewards us with added HP |
11/28/2004
|
| '05 F7 EFI dyno test bone stock with 2 degree key--an anomoly? |
| 10% lower fuel flow than normal, then tested with Speedwerx pipe and then PAC reduced fuel flow......... |
11/14/2004
|
| 05 Firecat EFI F7 SFD files SuperflowDataFiles |
| bone stock, Speedwerx single pipe, reduced top end fuel pressure w/ D&D pac valve |
11/12/2004
|
| 1999 Polaris XCR800 pump gas performance improvements! |
| proper jetting, DynoPort triple pipes, Dynoport muffler, VForce reeds, timing = incredible HP pump gas bang for the buck |
11/9/2004
|
| XCR800 Tuneup.... SuperFlowData Files (SFD) for examination |
| to view these, you must click on www.superflow.com (link is on our homepage), download free Windyne software |
11/8/2004
|
| 04 SkiDoo SDI 600 stage tuning the EFI 600 twin SkiDoo |
| comparing pitted poor leakdown stock rings to fresh aftermarket top end, compression bump, DynoPort pipe/ can, aftermarket reeds, etc... |
11/1/2004
|
| 04 600 SkiDoo SDI seven SFD (SuperFlowData) files from 7/24/04 |
| use your free SuperFlow Windyne software to compare/ overlay graph this and other test data SFD files |
11/1/2004
|
| Polaris XC600 SLP twin pipes added to John T's dyno mule |
| airbox mods, jetting tweaks, timing bumps, tuning for max pump gas HP on the Sean Ray XC600 low buck "tuneup". |
10/31/2004
|
| XC600 twin pipe upgrade SuperFlowData (SFD) files |
| raw data form our dyno, you can mix and match and see all variables and correction factors during our test session |
10/31/2004
|
| another Firecat F8 Bikeman stock cyl F8 with modified stock pipe |
| Mike Zigmont's most powerful stock F7 bumped up to 800cc Sorry non-Cat guys this is very significant. SkiDoo and Pol stuff coming next. |
10/27/2004
|
| Ziggy's F8 Bikeman engine SuperFlow data files |
| click on SuperFlow on our home page, download free Windyne software, compare these runs with othe SFD's on site |
10/27/2004
|
| 2005 F7 EFI SFD FILES 03/04/05 comparisons |
| use your free SuperFlow Windyne software to graphically observe. compare, etc |
9/20/2004
|
| 2005 F7 EFI EVALUATION well broken in sleds with 03/04 and 05 ECU's |
| injector flow rates may have huge impact on tuning, Fuel pressure drop/ timing advance to add 10 HP once again. |
9/20/2004
|
| 05 REDLINE REVOLT 800 early production unit |
| 800 two-stroke case reed twin, stock evaluation with fuel/ airflow tweeks for max HP |
5/9/2004
|
| 05 REDLINE REVOLT 800 SuperFlowData files for your perusal |
|
5/8/2004
|
| 2005 Yamaha Vector complete dyno evaluation |
| compare to RX1, Cat 660 turbo, etc |
4/28/2004
|
| 2005 Yamaha Vector SFD SuperFlowData files |
| compare graphs on your own Superflow free Windyne download |
4/27/2004
|
| Arctic Cat F7/F8 big bore another one, this time by Bikeman Performance |
| LT Bill DeFranco, max power w/ stock single pipe, SLP twin pipes for pump gas and a separate 100 octane dragrace tuneup |
4/26/2004
|
| LT/ Bikeman F7/F8 SFD (SuperFlowData) |
| use the freee SuperFlow Windyne software to graph/ compare/ analyze these dyno tests |
4/26/2004
|
| 04 F7 Carbureted SFD (SuperFlowData) of F7 Carb dyno session |
| download SuperFlow free software (click link), move these tests to disc, do your own graphs, see all other data from each test |
4/15/2004
|
| 04 F7 carbureted final test session (for now) |
| dyno test with timing backed off, compare dyno numbers with hood closed and air filter membrane attached |
4/15/2004
|
| 04 F7 Carbureted vs EFI we figured this thing out, carb HP can = EFI |
| check this out with 9 degrees added ignition timing (!!) and exhaust valves cranked WFO, EFI owners read'em & weep |
4/14/2004
|
| F7 EFI ECU COMPARISON Chris Heaven's trail mod Iantomassi F7 EFI |
| test B is with stock F7 EFI ECU, test C is with F6 ECU--note huge difference in EG valve opening and fuel flow lb/hr |
4/13/2004
|
| 04 F7 CARBURETED compare HP curve with EFI version |
| we found the missing airflow CFM, still looking for a few missing HP... |
4/11/2004
|
| Stock 04 ProX 700 STAGE TUNING FOR MAX TRAIL PERFORMANCE |
| jetting, airbox mods, reeds, reeds, carb boot mods, timing tweeks, compression increase, aftermarket pipe... |
3/31/2004
|
| 2004 F6 Carbureted EFI vs Carb |
| modify ignition timing, fuel flow, carb venting, compare early vs late muffler |
3/14/2004
|
| F7 EFI performance tuneup D&D F8 big bore cylinders |
| assess performace with stock single pipe and muffler, also with D&D twin pipes and can, all on pump gas |
2/28/2004
|
| 04 ProX800 Tuneup cheaply bumping HP from 128 to 151 HP |
| carb tuning, airbox mods, ignition timing, reed testing (read this before you buy reeds for your ProX800), SLP pipe and can... |
2/24/2004
|
| '04 Cat F7 EFI TOONUP Bill DeFranco's next dyno session... |
| stock bore 700, leaned out fuel flow, advanced timing, Arctic Cat race boxes (1000' and 500') |
2/18/2004
|
| 04 Firecat F6 EFI tuneup plus interesting comparison w/ 04 F6 carbed |
| EFI water temp, fuel mods, timing changes, all on 92 octane pump gas |
2/15/2004
|
| 2004 Arctic Cat 660 turbo world's highest boost production gas engine? |
|
2/11/2004
|
| F7 Firecat EFI Big Bore APC 800cc F8 kit, dyno tested |
| dyno airflow CFM is directly proportional to HP increase--fuel and timing adjustment are required |
2/9/2004
|
| 2004 F7 EFI Firecat tweaking stock ECU fuel curve for MORE HP |
| direct comparison of 2003 vs 2004 ECU programming, dropping the BSFC to .70 on top end w/o leaning midrange |
1/25/2004
|
| '04 Arctic Cat F7 EFI fuel flow/ HP w/ factory "drag pack" ECU's |
| Bill "looneytune" DiFranco working his way up to gonzo HP first with factory 1000' and 500' dragrace ECU programming |
1/18/2004
|
| SkiDoo Rev 800HO stage tuning by Kevin Freeman |
| jetting, timing, DNE ported cylinders, DynoPort pipe, Bender silencer, tuning done by Sled Shop, Presque Isle, ME |
12/31/2003
|
| AMSNOW SHOOTOUT '03 dyno certification dyno test data/ info |
| including lost F6 EFI dyno test, all dyno data, comments, RX1 breakin session |
12/12/2003
|
| FEEDBACK--BACKFEED rethinking Brake Specific Fuel Consumption |
| upcoming tests: Cat F7 800 big bore, SkiDoo and Pol 800 twins, New DTR High Altitude dyno, AMSNOW certification testing |
12/1/2003
|
| 2004 Yamaha RX1 Bender Stage III Engine & Turbo System |
| DynoTech's most powerful snowmobile ever tested here! |
11/19/2003
|
| Polaris 680 Ultra final chapter: upgrade to 1080cc |
| HTG Big Bore cylinder kit, quiet pipes, Megatron carbs |
10/20/2003
|
| dyno "stage" tuning 2004 SkiDoo Rev 600 dyno session text & data! |
| jetting, ignition timing, airbox mods, Vforce reeds, Bender muffler, DynoPort single pipe |
9/30/2003
|
| dyno "stage" tuning Polaris XC600 SuperFlow dyno test text & data |
| jetting, ignition timing, Vforce reeds, boost bottle, thicker basegaskets, higher compression, airbox mods (thanks Patty Denicola) |
9/18/2003
|
| tuneUP article Arctic Cat F7 Firecat EXTREME TUNEUP!!!!! |
| airbox mods, Vforce3 reeds, aftermarket pipe, radical fuel flow adjustments, shocking HP improvements |
2/28/2003
|
| tuneup article ZR800 low buck tuneup continued.... |
| dyno data from test number 006, aftermarket Ypipe with stock tuned pipe, which I forgot to include in the previous article. |
2/25/2003
|
| tuneup article ZR800 low-buck tuneup |
| jetting, airbox mods, Ypipe mod on Carl McQuillen's semi-stocker |
2/22/2003
|
| article on RX1 H.P. the RX1 HP disparity from day 1 to day 2?? |
| we discovered the cause of the missing RX1 HP!! ?? |
2/11/2003
|
| article online Friday: RX1 sudden power gain mystery solved?? |
| it happened again on a turbo RX1 while on the dyno-- lost airflow and HP, but we figured it out and got it back!! |
2/5/2003
|
| '02 AmSnow Shootout "A view from the controls" |
| the 700's and Big Bores, dyno tested and piloted at the Shootout by DynoTech performance maven Sean Ray. |
1/15/2003
|
| 02 AmSnow Shootout A View from the Controls |
| observations of American Snow Shootout dyno & field testing, small bore class by Sean Ray |
12/30/2002
|
| Pipe Shootout Update 2002 Polaris XC800 Twin Pipe Shootout |
| Twin Pipes from Aaen,CPI,HTG,PSI and SLP ....... Which would you buy??? |
12/22/2002
|
| Now Here American Snowmobiler Shootout |
| dyno certification 12/2, 12/3 results posted now! |
12/9/2002
|
| 2003 Polaris ProX 440 incredible single pipe HP! |
| the "mystery pushbutton" is the finest creation that Sean and Jim have invented yet! details inside! |
11/18/2002
|
| 2003 YAMAHA RX1 TURBOCHARGED 2003 YAMAHA RX1 |
| pumping air into the four-cycle engine to make more HP. |
11/8/2002
|
| Yamaha RX1 update... same sled, new day, more airflow and HP!? |
| you will be as surprised as we were! |
11/1/2002
|
| 2003 Yamaha RX1 Stock Evaluation |
| Comments on the dyno performance of our first production RX1. SuperFlow 901 engine dyno, connected directly to RX1 engine output shaft |
10/2/2002
|
| Single Pipe Shootout 2002 Polaris XC800 |
| Contributing editor Jim Czekala |
6/29/2002
|
| High Altitude High Altitude Observations |
| Contributing Editor Bill Davis-High Altitude Observations |
2/1/2002
|
| Old Forge Shoot-Out 2001 Old Forge Shoot-Out XII |
| Contributing Editor Sean Ray - Battle of Old Forge Shoot-Out XII December 2001 with Dyno Test Results |
1/1/2002
|
| Volume 7 Number 1 97 ZRT,Mach I,RMK,96 MXZ,680 SPX,Ultra |
| 97zrt600PipeShootout,700Mach I & Race Imp,700 RMK,96 MXZ 670 Perf Imp,680 SPX/600BigBoreSPS,600ZRT,KCameronDetonation |
3/1/1997
|
| Volume 6 Number 6 Old Forge VI,600 |
| Battle of Old Forge VI,600/800 Field Shootout/Dealer Prep,96 680 XCR SP,96 ZRT 600 Pipe Update,K Cameron-Detonation |
4/1/1996
|
| Volume 6 Number 5 96 Ultra,800 Storm,95 Mach I,96 MXZ 580 |
| 96 Ultra Pipe Update,95-96 800 Storm Comp,Turbocharged MXZ 670,V-Max 750 Twin,680 Ultra,95 Mach I Perf,96 SkiDoo MXZ 580,Formula III,KCameron-Airboxes |
1/1/1996
|
| Volume 6 Number 4 96 Ultra,95 XCR 600,Formula SLS,ZRT 600 |
| 96 Ultra Perf & Two Stroke,95 XCR 600 Pipe Shootout,96 SkiDoo Formula SLS,96 ZRT 600,Turbo V-Max 800 & XCR 600,KCameron-Oxygenated Fuels |
5/1/1995
|
| Volume 6 Number 3 Old Forge V,V-Max 600,580 ZR,Mach I & MXZ |
| Old Forge V,Gyt Kit - V-Max 600,Arctic Cat 580 ZR Shootout,95 SkiDoo Mach I & MXZ,V-Force Reeds - ZRT800,Mod Carb & Vaporation,KCameron-Suspensions |
2/1/1995
|
| Volume 6 Number 2 800 ZRT,Formula Z,440 XCR,SkiDoo MX/Mxz,V-max |
| 95 Arctic Cat 800ZRT,94 SkiDoo Formula Z,95 Polaris 440 XCR,SkiDoo MX to MXZ,Decibels,Turbo V-Max 600,KCameron- Combustion |
11/1/1994
|
| Volume 6 Number1 V-Max 800,Thundercat,XCR 600,Storm,Mach Z |
| 95 Yamaha V-Max 800,94 Thundercat Pipe Shootout,800 Storm & Mach Z Modifications,94 Polaris XCR 600 Stock Evaluation,KCameron-Suspensions |
4/1/1994
|
| Volume 5 Number 6 Old Forge IV,Indy XCR,Mach Z,V-Max 600 |
| Old Forge IV,94 Indy XLT w/Triple Pipes,94 Mach Z w/Jawes Pipes,94 Yamaha V-Max 600,KCameron-Emissions Control & Two Stroke Engines |
1/1/1994
|
| Volume 5 Number 5 700 ZR,Indy XLT,Thundercat,580ZR,Formula Z |
| 94 Arctic Cat 700ZR,94 Indy XLT-SLP Pipes & Trail Chambers,1000cc T-Cat,94 Arctic Cat 580ZR,94 Formula Z,Turbo Formula Z,KCameron-Torque & Horsepower |
11/1/1993
|
| Volume 5 Number 4 V-max 500 & 600,650 RXL & Mach I 670,94Storm |
| 94 V-Max 500 & 600,Turbocharged 650 RXL & Mach I 670,200+ HP V-Max 4,Mach I 670 Perf Impro,94 Indy 800 Storm,KCameron-Clutching & Pipe Temperature |
9/1/1993
|
| Volume 5 Number 3 93 Exciter SX,Indy XLT,Turbo Wildcat 700 |
| 93 Exciter SX Pipe Shootout,Indy XLT Pipe Update,Turbo Wildcat 700,KCameron-Octane,Engine Cooling,Turbocharging & Fuel "Puddling" |
5/1/1993
|
| Volume 5 Number 2 93 Storm,V-Max 4,Phazer SX,A/C 550 EFi |
| 93 Polaris Storm Perf Improvements,93 V-Max 4 Pipe Shootout,89 Yamaha Phazer SX Pipe Shootout,93 Arctic Cat 550 EFI,Dynometer Testing |
3/1/1993
|
| Volume 5 Number 1 Old Forge III,Shootout 580,650 & 750 |
| Old Forge III,Dyno/Field Shootout 580,650 & 750,Arctic Cat T-Cat,92 AWS Wildcat Porting&PSI Pipes,KCameron-Transfer Port Design Turbo Indy 580 XLT |
1/1/1993
|
| Volume 4 Number 6 93 XLT,V-Max 4,Formula MX,550 EXT Spec,Mach I |
| 93 XLT 580 Perf,93 V-Max4,SkiDoo Formula MX Perf,EXT Special 550 Pipe Update,Torsion Vib,Mach I 617 Turbo,Exciter II Turbo,KCameron-Carburetors |
11/1/1992
|
| Volume 4 Number 5 92 EXT,92 Formula Plus,Turbo V-Max |
| 92 EXT Special Performance Improvements & Pipe Shoot-Out,92 Formula Plus X,ZR 500 Top End Kit,Turbocharged V-Max 4,KCameron-Heresy and Revolution |
9/1/1992
|
| Volume 4 Number 4 92 EXT,92 Formula Plus X,RZ 500,Turbo V-Max4 |
| 92 EXT Special Perf Improvements,EXT Stock & Mod Pipe Shootout,92 Formula Plus X, RZ 500 Top End Kit,Turbo V-Max 4,KCameron-Port Areas |
7/1/1992
|
| Volume 4 Number 3 93 Indy 583,Exciter II,V-Max 4,90Prowler 440 |
| 93 Polaris Indy 583XLT,91Exciter II Pipe Shootout,V-Max 4 Pressure & Carb,90 Prowler 440 Perf. Stock & Modified Shootout,KCameron-Combustion Mixtures |
5/1/1992
|
| Volume 4 Number 2 Old Forge II,Musclesled,Mach I,V-Max4,Indy |
| Battle of Old Forge II,Musclesled Shootout,92 Mach I-Perf,V-Max 4 Tuneup,Indy 500 EFI Pipe & Head Cut,700 Wildcat 91&92,V-Max 4 Carb Problems |
3/1/1992
|
| Volume 4 Number 1 92 Wildcat,Phazer,Mach IX,Carb Weights |
| 92 Wildcat 700,Modified Yamaha Phazer,92 Mach IX,Stock 700 Wildcat Pipe Shootout,Carb Weights 87-90 Exciter,KCameron-Two Stroke Cooling Systems |
1/1/1992
|
| Volume 3 Number 6 91 V-Max,EXT,Mach I,92 Indy |
| 91 V-Max 4,91 EXT Special,92 Polaris Indy 500EFI,Turbocharged Indy 500,91 Mach I, Mod 700 Wildcat,91 Indy 650 Pipe Update,KCameron-Combustion Chambers |
11/1/1991
|
| Volume 3 Number 5 91 Mach I,Yamaha&Indy,90 Arctic Cat,Exciter |
| Nitrous Inj 91 Mach I,91 Yamaha SRV Shootout,90 Arctic Cat Cougar,91 Indy 650 Pipe Update,PSI 650 Exciter Twin & 750 Polaris Triple,KCameron-Oil |
9/1/1991
|
| Volume 3 Number 4 Tech Issue,Air Density & Engine Performance |
| Tech Issue, Air Density & Eng. Performance,EFI & Pipe Temp,Engine Boring & Stroking,Machining a Stroked Two-Cycle Motor |
7/1/1991
|
| Volume 3 Number 3 91 Indy,I-500 Snowmobiles,V-Max 4,91 Mach IX |
| Mod 91 Indy 650,I-500 Cert-Polaris 400XC,Arctic Cat Prowler, Ski Doo MX-X,Yamaha SRV,91 Mach IX Shootout,V-Max 4,KCameron-Fuel Vaporixation & Per |
5/1/1991
|
| Volume 3 Number 2 Old Forge,90 Wildcat 650,86 V-Max,91 Indy |
| Battle of Old Forge,SLP Reeds & Trail Porting 650 Wildcat,86 Formula III V-Max,91 Indy 650 Carb,KCameron-Fuel Volatility & Performance |
3/1/1991
|
| Volume 3 Number 1 91 Exciter ,91 Mach I,91 EXT ,91 Indy,BMEP |
| 91 Exciter II,Brake Mean Effective Pressure,91 Mach I,91 EXT Special,91 Indy 500 Stock & Pipe Update,KCameron-New V-Max 4 |
1/1/1991
|
| Volume 2 Number 6 91 Wildcat,91 Indy,86 V-Max,Indy 500 |
| 91 Wildcat Carbureted 700,91 Indy 650 Carbureted,86 Ported V-Max updated,Excellent Engines,89 Mod Indy 500-SLP Pipes,KCameron-Tuning & Temp |
11/1/1990
|
| Volume 2 Number 5 91 Mach I,87 Yamaha V-Max,84 El Tigre,91 Indy |
| 91 Mach I Prototype,87 Yamaha V-Max,84 El Tigre 6000,91 Indy 400,KCameron-Crankshafts |
9/1/1990
|
| Volume 2 Number 4 90 Middleweights,89 Wildcat,Turbo Indy 650 |
| 90 Middleweights-Indy 500 SP,Arctic Cat EXT Special,Formula Plus 500,89 Wildcat 650,Turbo Indy 650,KCameron-91 Yamaha 4 cyl |
5/1/1990
|
| Volume 2 Number 3 88 Wildcat,89 Indy 500,90 Polaris RXL,Exhaust |
| Stock 88 Wildcat Shootout, Modified 89 Indy 500 Shootout, Stock 90 Polaris RXL,KCameron-Making Two-Stroke Exhaust Systems |
3/1/1990
|
| Volume 2 Number 2 Phazer,Mach I,90 Arctic Cat Prowler,Nitrous |
| Modified Phazer Shootout,90 Arctic Cat Prowler,FIII Mach I Shootout,Nitrous Oxide,EFI Update,KCameron-Crankshaft Vibrations |
1/1/1990
|
| Volume 2 Number 1 89/90 Indy 650,89/90 Mach I,Indy 500,2-Stroke |
| 89/90 Indy 650 Comparison,89/90 Mach I Comparison,89 Stock Indy 500,Thermal Coating,Compression Ratios,KCameron/Two-Stroke Engines |
11/1/1989
|
| Volume 1 Number 6 89 Mach I,89 El Tigre,Fuel Systems |
| 89 Mach I Pipe Shootout & Tune Up,89 El Tigre 6000 Stock & Modified,Thermal Coating,Dyno Terms Refresher,KCameron-Fuel Systems & EFI |
8/1/1989
|
| Volume 1 Number 5 89 Mach I,Slick 50,Klotz Nitro,Indy 400 |
| 89 Mach I Modifications & Pipe Shootout,Dial-A-Jet,Slick 50 Treatment,Klotz Nitro Additive,Big Bore Indy 400/440,KCameron-Reading Pistons |
4/1/1989
|
| Volume 1 Number 4 89 Exciter, Formula Plus, Wildcat, Detonation |
| Ported Exciter,Bad Vibrations,Airbox Modification,89 Formula Plus,89 Wildcat Formula III,Wildcat Carbs,KCameron-Detonation |
2/1/1989
|
| Volume 1 Number 3 89 Wildcat 650, 89 Indy 650, 89 ArcticCat EXT |
| Stock & Modified 89 Wildcat 650, 89 Indy 650 Pipe Shootout, 89 Arctic Cat EXT,Brake Specific Fuel Consumption,KCameron-Variable Exhaust Timing |
10/1/1988
|
| Volume 1 Number 2 88 Phazer, 89 Mach I, 88 Formula Plus,89 Indy |
| 88 Phazer pipe shootout, 89 Mach I, Modified 88 Formula Plus, Airflow, Stock 89 Indy 400 & 500,KCameron-Two Stroke Engines |
5/1/1988
|
| Volume 1 Number 1 88 Exciter, Formula Plus, Wildcat, 74 Mercury |
| Dyno Terms, 88 Exciter pipe shootout & PSI needles, Stock 88 Forluma Plus,Cold Air vs Hot Air-RAD, Stock 88 Wildcat 650, 74 Mercury 400 Snowtwister |
1/1/1988
|
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