New Exhaust- Need help with jetting
  • Wrenches67
    Posts: 1
    Joined: Tue May 02, 2017 5:48 am

    New Exhaust- Need help with jetting

    by Wrenches67 » Tue May 02, 2017 6:00 am

    Hello-

    I have a 150F. Just put a Pro Circuit T4 on the bike and I am struggling to get the jetting right. I am up to a 100 main and no difference. All the issues are at top end. It stutters like not getting enough fuel.

    Any help would be great I miss riding!

    Thanks!
    Jessica
  • harknut
    Posts: 4
    Joined: Wed Aug 23, 2017 1:39 pm

    Re: New Exhaust- Need help with jetting

    by harknut » Fri Aug 25, 2017 11:41 am

    Hello Jessica,

    I too am having the same issue after adding an aftermarket pipe. Any information you may have figured out would be much appreciated!
  • char1982
    Posts: 1
    Joined: Fri Jan 05, 2018 6:51 pm

    Re: New Exhaust- Need help with jetting

    by char1982 » Thu Jun 07, 2018 4:06 pm

    did either of you ever get the right jetting set up? if so, whats the answer and what elevation do you ride at? thx!
    ***2012 CRF150RB - FMF Q4, rekluse exp 3.0***
  • mustangnut
    Posts: 20
    Joined: Sun Jan 28, 2018 11:04 am

    Re: New Exhaust- Need help with jetting

    by mustangnut » Tue Jun 12, 2018 10:55 am

    You are probably looking at more like a 115 or 118 main jet rather than the 100 main the first post mentioned. I have a CRF125FB with an aftermarket exhaust and needed a 117.5 main jet (Granted I am basically at sea level). Here is a link to jetting a CRF150F:

    viewtopic.php?f=12&t=13787

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