Hey, I got a 2008 wr450f with an ASI removal kit, grey wire snipped, no throttle block, pee shooter removed from exhaust, and no air box lid. As far as jetting goes its jetted with what came with ASI kit(WHICH NOONE SEEMS TO KNOW WHAT SIZE JETS THEY ARE!!) I have a FMF mega bomb header and a factory 4.1 muffler to install. My question is do I pose any threat to my motor by just bolting the exhuast on and using the current jetting. On FMF's website they say most of their systems are direct bolt ons with little changes required. I also ride at sea level. Help lol.