HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
lanny574

FMF exhaust jetting 2008 yama

3 posts in this topic

putting a powercore slip-on my 2008 yz 450f what do i need to do to the jetting

I have the same slip-on. Put a 48 pilot in and an adjustable fuel screw. The backfiring on decel will be almost eliminated.

Edited by curtis515s

Share this post


Link to post
Share on other sites

And a 165 or 168 main jet. Popping on decel is a good thing. If it doesnt pop, you are running rich.

Share this post


Link to post
Share on other sites

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
Sign in to follow this  
Followers 0