Gen 1 mods 186.6RWHP & 107.6 ftlbs is this right?

[Tofy92]

Hey guys so i have been working on my bike over winter to get her ready for the season of drag test days in the uk.

My current performance mods are as follows:

- K & N airfilter
- VooDoo sidewinder Exhaust
- Oil Cooler Removed
- Emissions stuff removed
- Short intake trumpets on center 2 cylinders in airbox
- Small airbox mod
- MR12 Fuel
- ECU Flash

Do these power figures look right? it was nice and cool in the dyno cell (as it is the uk).

Here is a printout including before, just mr12 no flash, then with MR12 and flash.

 

[busabobh]

I had an 02, it made 158hp and 98.5tq on pump gas with yosh pipe and tune. My 08 made 191hp and 115tq with AH pipe , tre , and tune, on pump gas. I would say your doing good with a gen 1.

 

[busakiller]

I would say the dyno is pretty generous with numbers. With the mods I would say 170 would be right. But if the dyno doesn’t compensate for weather then that’s why the numbers are high. I have dynod a couple gen 1s and they made around 165 whp on pump gas.

 

[WuzzaCBXRider]

My 06 LE has always been a good runner and one day, along with my CBXs I had it on a BMW’s shop dyno in San Jose who fielded race bikes, when it had around 35,000 miles on it. The best of the three runs netted 160.something, I forget but not quite 161 and that was pure stock on 89 octane pump gas. The other two runs were 159.something. I did one run with modded stock cans and although it sure sounded good, I lost the mid range ’snap’ and 5 hp!

 

[GMbusa]

Every dyno is different. I've seen as much as a 28hp difference between them.

 

[Berlin Germany]

Every dyno is different. I've seen as much as a 28hp difference between them.

yep

and the differences start with the weight of the driver
the way the bike is bound on the dyno
the rear wheel pressure
and so on

but every dayno has its rights
to compare the standard engine power to the "new" power when mods are done
e.g. when a flash is done while still beeing bound on the dyno at the same day with same weather conds.

or to get an impression what for instance a wrong muffler / db-eater can cause

i had that issue with my former ´00 - with 1200 bandit muffler and original db-eater - 127 hp
- without 157 hp - was pretty "shocking"
over 7 300 rpm no more more power but at the same level - 127 hp
and even the 157 hp were to low - caused by the wrong, because to small, muffler itself.
it clogged the exhaust gas flow so that the engine literally suffocated.

 

[Bumblebee]

For the mods listed, I'd say those numbers are pretty high...like a few said a very high range would be around 170 on a good day which would place it close to a stock gen 2 (172 or so).

 

[kml]

Every dyno is different. I've seen as much as a 28hp difference between them.

Mine dynoed at 138 on a conservative SuperFlow and 178 on a happy DynoJet.
Internet HP numbers are a shitshow.

LOL

cheers
ken

 

[kml]

Cut and paste from;

The Story Behind the Dynojet Chassis Dyno - The Truth Meter

Classic Muscle Cars, Custom Roadsters

www.hotrod.com

"Dynojet's final number-fudge was arbitrarily based on a number from the most powerful road-going motorcycle of the time, the '85 1,200cc Yamaha VMax. The VMax had 145 advertised factory horsepower, which was far above the raw 90hp number spit out by the formula. Meanwhile, existing aftermarket torque-cell engine dynamometers delivered numbers that clustered around 120. Always a pragmatist, Dobeck finally ordered his Chief Engineer to doctor the math so that the Dynojet 100 measured 120 hp for a stock VMax. And that was that: For once and forever, the power of everything else in the world would be relative to the '85 Yamaha VMax and a fudged imaginary number. Dobeck's engineering staff was dismayed by the decision, but the Dynojet 100 exclusively measured surplus power available to accelerate the vehicle's mass-no more, no less-and that was true even if the modification was a low-inertia flywheel or lightweight wheels. As long as the inertial dyno's numbers were repeatable, the critical question (did a particular modification make the engine accelerate faster or slower?) would be answered correctly."