Try this first. TPS reset (throttle position sensor)
Resetting the TPS on 08+ Buells
Resetting the TPS on 08+ Buells does not require external Software to perform a TPS reset, but
DirectLink can be used to confirm that it is set correctly. The 08+ Buells are equipped with Idle
Air Control logic, and the idle air and speed is under ECM control. The fully closed butterfly
position is set by a stop that is cast into the throttle body, and there is no external throttle position
stop screw.
To reset an 08+ Buell, do the following:
1. Turn on the key.
2. Set the kill switch to the run position.
3. Don’t start the engine. Rotate the throttle from fully closed (gently forced closed) to fully
open (gently held open), and then back again to closed (gently forced closed).
4. Repeat 3 times. Hold each position (fully open, fully closed) for 1 full second.
5. Turn the key off and on.