Jet size increase for Race pipe and open filter?

Discussion in 'Maxiscooter Tuning' started by Ratty, May 9, 2009.

  1. Ratty

    Ratty New Member

    Messages:
    23
    No idea why I can't find any info on this maybe I'm going blind or something.

    Basically I'll be running a straight-through exhaust and open air filter when I finish building my 4T LC scooter.

    But how many jet sizes do people go up by when doing this mod, when I do this mod on big bikes they normally want a couple of jet sizes increase. Is it the same for the VX125 engine?
     
    Ratty, May 9, 2009
    #1
  2. tip1

    tip1 New Member

    Messages:
    60
    I remember reading on here that on a 2t 125 engine with an open filter and exhaust you should upjet about 10%.

    Not sure on the 4t though.
     
    tip1, May 9, 2009
    #2
  3. MiNoR cOnFuSiOn

    MiNoR cOnFuSiOn Administrator Staff Member

    Messages:
    14,276
    Rides:
    et2 monster
    just do the norm... go up bigger than you expect then work down.. its more to do with the needle on the cv carbs
     
    MiNoR cOnFuSiOn, May 9, 2009
    #3

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