There was an issue with coil packs with some 2008's i had a 2009 and put coils from a 2010 i picked up off eBay just in case.

Hey guys, Took the bike apart to clean the air filter and replace the clutch cable, so I decided to go ahead and do the PAIR valve mod since I have an aftermarket exhaust (Two Brothers). Took it out for a test ride- still popped but not as badly, and i noticed this odd high pitched sound at...