I have *finally* gotten around to ordering the exhaust for my bike. Because sound irritates me, I decided on the FMF Q4, along with the Powerbomb header. I plan on opening up the airbox while I'm at it. The bike runs great right now, with the NCVS needle, 45 pilot, 50 leak, and 165 main, for about 1400 feet elevation in Phoenix, AZ. Should I jump to a 170 main with the exhaust and airbox? Seems to be around what the guys with exhaust are running in the jetting database. I see that a lot of guys are also running the 165 main with an aftermarket exhaust, should I just leave it alone?