Jump to content
Sign in to follow this  

04 Yz450 And Powerbomb Header

Recommended Posts

I Have A 2004 Yz450 And Put A Powerbomb Fmf Header And A M4 Muffler It Look Just Like A Fmf Muffler And It Seem Like It Backfires (pops As I Decelerate) More Than Normal, Whats The Jetting Suppost To Be? Im At 700 Feet In San Antonio Tx And Know Squat About Jetting

Share this post


Link to post
Share on other sites

Mine did the same thing when i put a pc muffler on. Turn the fuel screw out a quarter turn. If it pops more, then turn it back in a half turn so that ur richening it by a quarter turn. You can probably fix this problem my adjusting that fuel adjustment screw!!

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

Reply with:

Sign in to follow this  

×
×
  • Create New...