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this is an 11 test tuneup, highlights show various combos that can add up to 150+ HP

Last week we blew out an aluminum water feed line in the dyno water tank--16 years of corrosive action from our city water ate the aluminum into white powder. After several days of replacing white dust with solid brass pipes/ pipe fittings we're about ready to go...

Today we're dyno tuning a couple of SkiDoos--one MXZ800 trail mod big bore 827, and one 670HO. Starting at 9am. Jimmy Cooper is coming over with his computer to roll the timing on the MXZ to see where it is happiest with.

I'll be posting this stuff soon, but our carbed F7 tested earlier--now with 020 cut on head and Bikeman pipe mod and D&D Ypipe is well over 150 hp with max HP jetting. The D&D Y pipe was good for 3-4 HP extra with the Bikeman stock pipe, less on the stock pipe...

low compression pistons, forged rods, gonzo ball bearing turbo w/ gonzo boost on race gas

Chuck Hamrah/ Frank Jarocki's  Bender Stage3 turbo  was tuned yesterday to 415 HP. My armpits are just now drying out.  If you look at the  webcam in the dyno control room, we have the corrected HP  digital readout filling the screen so you...

During our brute HP tuneup Saturday the sled lost fuel pressure (fuel leak at electric pump) and detonated the turbo Price 1000cc Mach Z triple, but before we stopped we made 308 HP at less than 10 psi boost. He will be back with freshened up engine, looking for 350+...

Last Sunday Sean Ray completed the updates on our SuperFlow Cycledyn roller inertia/ eddy current motorcycle dyno. Now we read A/F ratio with up to two O2 sensors. And if we fit our original airflow meter to the engine, the computer can then give us fuel flow lb/hr...

Bikeman Performance Big Bore Stock Stroke tested with single pipe, SLP twins, D&D twins

As we can see on our dynocams, the sled lift and framework have been stripped, sanded, primed and painted a lighter blue eurethane. The frame is now bolted to the lift, and this weekend I'll have the 901 absorber and its black framework and engine cooling tower bolted...

Slow season is here--waiting for new models to be shipped. We were scheduled to test a new 600 Fusion in June, but Rich Daly from DynoPort snatched it first, ostensibly to create better exhaust etc before it comes to DynoTech (now July). I dyno tune maybe one asphalt...

A FLOCK OF LATE MODEL VARIOUS STUFF SHOWING UP ON MY DYNO IN LATE MAY!............................................................................... Stock Fusion w/ dynoport pipe vs stock pipe Stock fusion with electronic fuel tweakers Stock fusion with SLP pipe and...

Tom’s stationed in Iraq, watched the dyno session live on internet, with this he can get the SFD files and see results

2/1/05 New GMN $480 sprag clutch installed, back to tuning2/2/05 Bill Mead Bikeman F8, tuning Boondocker EFI box2/4/05 AM, Jimmy Tanner, F7 dragracer tuning 500' and 1000' setups2/4/05 PM Jarred F8 DD, tuning Boondocker box2/7/05 AM Jim Gonyea and pals, Hooper 1400...

F9 tested with twin pipes, F9ss tested with new Monster single pipe and importantly quiet stock muffler

1/2  AM Tom Reynolds mod Viper [trail ported by Tom, bored carbs, pump gas, Hauck trail pipes 160 HP]1/3 AM Dan Johnston 03 F7 [107 lb/hr stock, then he used his own $20 needle valve to choke down to 100 lb/hr and 145 HP]1/4 Steve Orlaski 03 F7 10 AM1/5 Jim...

 I have in my possession a DynoPort Fusion Single pipe kit. I would like to find other Fusion owners who have SLP pipes/ SLP programming, HTG or other big bore, etc. Call me at 585-993-2777 to discuss. Mach Z stuff needs to be addressed, since all we've done here...

also some very violent DNE radar run engines–1234cc quad and a quadzilla 1563 all-engine record breaker at DTR

As you can see from the schedule we're coming into the end of the winter trail sled performance tuning sessions. Les Ferenczy called today about trying one of the Boondocker DTR programmed boxes on his stock F7--he'll be here tomorrow to try that out. The DTR...

compare torque, HP, airflow CFM between stock single pipe and new Twins