Quote:
Originally Posted by Nicosiacustom
Im having the same problem on my 06 i have a jet kit installed no vacuum leak didn't have the problem till after the jet kit was installed. Im leaning towards the fuel filter or the air valve for the tank its almost like its not filling the bowl fast enough and the idle will go from 1500 to 500 and back between 1500 and 2000 dont know if yours is the same but if it will help ill let you know if i figure it out.
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If fuel-flow is not sufficient for idle, bike would not run at all at higher-RPMs.
Did you check valve-clearances? What are they?
Which jet-kit did you install and which jet-sizes?
Really need wideband-O2 datalogs or dyno-testing to tune with jet-kit. Otherwise, there's absolutely zero way you can determine what jetting changes are needed.
Bet if you go back to bone-stock, idle will be perfectly fine.