and Another Dr. D Question

1 reply to this topic
  • YZ450RDR

Posted March 02, 2009 - 06:57 PM


Just put my new pipe(SS) on :thumbsup:my 08' YZ450. Jetting is not my forte. My elevation is 4300ft. Still running the stock jets (All). I am getting backfire on declaration. I've read most of the threads on this just not getting it :p Dr D recommends 162 main considering the elevation which way do i go??

Thank in advance!

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  • grayracer513

Posted March 02, 2009 - 08:25 PM


160-162, but the main jet has nothing whatever to do with decel backfire.




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