question #1 we have 2 "04" 660 raptors just installed an fmf powercore 4 q with a powerbomb header on one what do you recomend for jetting manufacturer and size we are at 2500' to 3000' above sea level. question # 2 the other 660 we are installing an alba pro series exhaust and header what do you recommend for jetting manufacturer and size
by the way we enjoy trails dunes and hills.[img]i/expressions/face-icon-small-happy.gif[/img]

 

At 500' we've used 160/165 mikuni mains on an FMF and 165/170 on pipes similar to the alba for bikes with the airbox lid removed. You'll probably want to thin that down for your elevation.

 

OK (thin that Down) I am new at this jetting please give me some Ideas to start.

 

I'm pretty sure that's what I just did. I'm sure others will be along to add their take on this as well though.