New exhaust and getting backfire, what size jet should I go up to?

Discussion in 'Maxiscooter Tuning' started by Kev Clark, Sep 17, 2014.

  1. Kev Clark

    Kev Clark Member

    Messages:
    289
    Rides:
    Lexmoto Zoom 2 125
    Hello lads just got a new sports exhaust and it sound amazing! Getting a little backfire every now and again tho. Running on stock filter and a 110 main jet. Should I put a 115 in?
     
    Kev Clark, Sep 17, 2014
    #1
  2. solorider

    solorider Member

    Messages:
    53
    Rides:
    Longjia LJ50QT-K
    when does this back fire happen? is it just a pop? if so it could be just an airleak in the exhaust, quite common in performance exhausts.
     
    solorider, Oct 13, 2014
    #2
  3. rickbezer

    rickbezer Member

    Messages:
    89
    My old runner sp125 used to backfire when it had low compression.
     
    rickbezer, Jan 26, 2015
    #3

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