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ARTICLES
(use your browser's 'find' command
to search this index - Ctrl F in Explorer)
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| 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
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| SkiDoo 4Tech 1200 2008 SkiDoo demo sled |
| part throttle fuel consumption, full throttle HP, compare HP/ TQ to Yamaha Nytro, |
4/8/2008
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| 08.5 Polaris Dragon 800 stock evaluation with aftermarket pipes |
| compare stock vs SLP single vs BMP modified stock pipe |
3/31/2008
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| 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
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| 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
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| 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
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| 2007 Adirondack Shootout SnowGoer/ SnowWeek/ DTR Shootout |
| actual test data obtained during the 18th annual Shootout dyno certification |
3/9/2008
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| New DTR all motor record HTG XCR1640 four cylinder lake racer |
| textbook tuneup, added 99 HP in three hour tuneup |
3/8/2008
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| Yamaha Apex CPR turbo stock Apex with Simons front mount turbo |
| compare lowest boost pump gas setting to higher boost setting |
12/13/2007
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| SnowWeek/DTRshootout trail and lake mod entries |
| MPH and ETs of trail mods 1000ft and lake mods 660 ft |
12/7/2007
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| F1000 pipe comparison aftermarket Y pipes/ single pipes/ cans |
| compare stock exhaust with Speedwerx, D&D, and Bikeman exhaust components |
11/28/2007
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| ZR900 trail modifications Tom Mango |
| pump gas tuning with mods/ parts cherry picked from five different companies |
11/9/2007
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| 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
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| 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
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| Mach Z reed dyno test trail ported w/ Crankshop twin pipes |
| compare stock reeds/ cages with Boyeson Rage Valve reeds/ cages |
10/27/2007
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| SkiDoo08 Rev XP800R mod trail mod by Bikeman Performance |
| pump gas modifications including head, porting, pipe mod, airbox, timing |
10/18/2007
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| 08 Yamaha Nytro stock evaluation |
| compare stock vs reduced exhaust backpressure |
10/2/2007
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| Yamaha APEX drag engine MPI supercharged w/ methanol fuel |
| big bore, stroker w/ Autronics fuel/ spark management built by Woody |
9/24/2007
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| Bikeman Performance M1000 This is bad dyno data, will be corrected soon |
| overheated dyno console power supply and poor analysis of data by Jim |
9/21/2007
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| SkiDoo 600SDI single pipe comparison, head modification |
| compare stock pipe to Bikeman modstock, DynoPort, Straightline plus more HP with less compression |
1/24/2007
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| 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
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| 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
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| 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
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| 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
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| new NA DTR HP record DNE 1725cc four cyl two stroke race engine |
| Tommy McConkey |
12/20/2006
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 07 IQ 600 EFI pipes compare single pipes |
| stock pipe/ vs DynoPort pipe/ vs Bikeman modded stock single pipe |
9/2/2006
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| 07 Polaris EFI IQ600 stock evaluation |
| compare cool ipe graph vs hot pipe graph; this will help your clutch tuning |
9/1/2006
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 2007 Arctic Cat Jaguar Z1 all-new 1100 four-stroke twin |
| JD Powersports' new stocker, pre-breakin, pre-turbo |
4/22/2006
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| 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
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| 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
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| 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
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| Arctic Cat 660 turbo tuning for much greater pump gas HP |
| JD Powersports' dynotech research tuning session |
3/5/2006
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| "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
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| 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
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| Graphic Comparison stock header vs Excell Motorsports header |
| Graphic comparison of airflow CFM vs HP |
10/20/2005
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| 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
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| 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
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| 2006 Yamaha Apex 2006 Yamaha Apex stock dyno evaluation |
| tested stock and also with Excell Motorsports New Generation center outlet muffler |
10/16/2005
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| 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
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| 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
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| '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
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| 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
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| 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
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| 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
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| FIRECAT F9 |
| Bikeman Performance Big Bore Stock Stroke tested with single pipe, SLP twins, D&D twins |
8/12/2005
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| '05 Polaris IQ 440 a broad powerband, nearly 4 hp/ cu. in. |
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2/14/2005
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| HTG Polaris XCR1080 Tom Tyson's wicked pump gas trail sled |
| upgraded with new HTG High Volume quiet trail pipes |
2/11/2005
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| BikeMan EV Spacer kit Carbed F7 tested before and after.... |
| excellent midrange Airflow CFM and HP improvements |
2/4/2005
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| 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
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| 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
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| 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
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| 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
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| 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
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| 05 SkiDoo MachZ first dyno test, after breakin hours |
| this is the test we did during our inaugural LSV session |
12/5/2004
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| 05 SkiDoo MachZ SFD file cool engine, hot pipe |
| more details coming this PM |
12/5/2004
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| 2005 Polaris Fusion STOCK DYNO EVALUATION |
| fine tuning airbox for maximum stock HP rewards us with added HP |
11/28/2004
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| 2005 Polaris Fusion SuperFlowData (SFD) files |
| dyno test data stock, various airbox mods |
11/28/2004
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| '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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 2005 F7 EFI SFD FILES 03/04/05 comparisons |
| use your free SuperFlow Windyne software to graphically observe. compare, etc |
9/20/2004
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| 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
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| 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
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| 05 REDLINE REVOLT 800 SuperFlowData files for your perusal |
|
5/8/2004
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| 2005 Yamaha Vector complete dyno evaluation |
| compare to RX1, Cat 660 turbo, etc |
4/28/2004
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| 2005 Yamaha Vector SFD SuperFlowData files |
| compare graphs on your own Superflow free Windyne download |
4/27/2004
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| LT/ Bikeman F7/F8 SFD (SuperFlowData) |
| use the freee SuperFlow Windyne software to graph/ compare/ analyze these dyno tests |
4/26/2004
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 2004 F6 Carbureted EFI vs Carb |
| modify ignition timing, fuel flow, carb venting, compare early vs late muffler |
3/14/2004
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| 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
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| 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
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| '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
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| 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
|
| Kevin Cameron ROLE OF RPM |
| RPM, torque, BMEP, IntakeAirVelocity, 2cycleVS4cycle, portTimingVSvalves&camTiming, BoreVSstroke, |
2/11/2003
|
| 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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