High Comp Piston Jetting

I have a 06 450 with brand new valves, a new wiseco HC piston, polished exhaust ports, and a Carbon Pro exhaust. I ride at sea level, and I was wondering with these new mods (the piston, valves-still TI, and the polished ports) would i need to richen up my main jet? or do anything else specifically?

thanks everyone in advance

i added a hc piston from je, changed the valves. it was running rich after the mods. i went up one clip position on the needle. the bike runs great now and starts easier.

So im with gray, u should have to go leaner

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now