First of all i love my yfz but while reading up on the trx 450 i read that stock it has 42 HP. And with the HRC kit it jumps up to 47. I have a fmf ti 4 exhaust on my 450 and fmf's web site says with that pipe 36 hp. I am gettig a little scared anybody else? Don't get me wrong i have faith but 47-36 doesn't lie. Could this be wheel to motor hp differences. Somebody please let me know so i don't have a panic attack here.