2nd Gen JCW Surging

Discussion in '2nd Generation: 2007+ R55 through R61' started by minirab, Feb 26, 2017.

  1. minirab

    minirab Well-Known Member

    May 6, 2009
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    Hagerstown, Md.
    Ratings:
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    2012 R58 JCW (N14) with a RMW tune. This started
    a little while ago. When using 1/2 throttle or more
    the motor surges from 2500 rpm to 5000 rpm then
    the surging stops and pulls like it should. This
    surging is very rapid, at least once a second. The
    car doesn't throw any lights. I do have a Sprint
    Booster on it so I set it back to the stock map think-
    ing that might be it but no dice. It still does it. Any
    thoughts? Also, the car has a Scanguage and the
    map goes up to 34.0 but no higher. Is that telling
    me something?
    Thanks.
     
  2. MCS02

    MCS02 Moderator
    Staff Member Articles Moderator Supporting Member Supporting Member

    Jul 31, 2009
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    +5,582 / 5 / -0
    Just a wild guess, Is the throttle body clean? Have you checked all your vacuum hoses? Bad sensor MAP or TMAP I can't remember what the R56 has.

    Sorry not much help
     

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