well, still no rejetting here, i could let the bike sit in my garage running for 30 minutes go out and rev the crap out of it, without moving it, get it hot, really hot, but the light will not come on, fan does but not the dreaded light, depending on where you live, you may not have to rejet, i live in the appalations and the elevation varies from around 700 to 3000, ive had the bike out for long slow rides on hot days and it has never overheated, i would be very hesitant on jetting after seeing all the problems that arise after doing the mod, also its not worth the money you pay, there is very little performance gain, also what matters the most isnt the kandn or the exhaust tip, its the air intake, the bike only gets as much air as the intake lets in, modifying the intake would be the single biggest reason to rejet