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660 raptor idle issue

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I'm new to this site, looks great so far. I hope you don't mind ATV's. My 2005 Raptor 660 has an occasional idle problem. It does a fast idle on deceleration, Seems to be when going downhill. The engine is stock except for an FMF pipe and power bomb header. I've also jetted it up with the pipe (main jets and pilot jets and moved the needle one notch) and drilled some holes in the air box lid with White Bros air filter. It's not a big incovenience but I don't want to be running lean if thats the problem. Any help is appreciated. Thanks. :cry:

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Look for air leaks and then consider another step richer on the pilot jet. A fast, hanging idle, is usually a symptom of lean low speed jetting. Make sure the throttle cables and linkage are working freely also.

James

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