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Originally Posted by ThePass Curious, I've got a Yoshi exhaust and just changed the rear sprocket to a 45 tooth (+2)..
The bike power wheelies in first, but even pinning it in 2nd, the front end gets light but doesn't pick up. I've heard from guys with similar year liter bikes of other makes that they will power wheelie in 2nd.. does it sound like mine is down on power or is that the same for you guys who know from the dyno that you have the proper amount of power? |
First, what elevation are you at? I'm at ~4000 ft down in the valley, but when I go on rides up in the mountain passes my performance drops considerably. I have stock gearing, and in the valley it will lift in the first 2 gears, however second makes me pre-load and blip it slightly to bring it up to balance point. When I'm up in the mountains, I can't lift 2nd gear unless I cheat and use the clutch

, but that's around 6000+ ft.
One thing that works exceptionally well, is that IF you have a Power Commander 3 USB, you can tune in the "Accel pump" feature, which detects a change in throttle position, and adds a specified amount of fuel for a specified amount of engine revs before it tapers off. This is easily tuned on a dyno by "blipping" the throttle in 2nd or 3rd and recording the AFR. Usually you will see a lean spike due to the volume of air in the air box being dumped into the engine. The "Accel pump" merely anticipates this and dumps fuel to compensate the lean spike. This is different bike to bike, some bikes may not even need it, but I do know that my 929 LOVED it, and throttle response very nice
With this feature you can tune the following:
Sensitivity of change in throttle position (so only quick blips trigger this)
% change in fueling (I usually use 6%-10%, depending on the measured AFR)
# of engine revs the change is applied for (Again depending on the bike and the length of the lean spike, I usually use 2-4 revs).
On most bikes I've done this too, it changed the way the bike responsed immesely, almost like a new bike! Enjoy!
