Turbo M20B25 Bucks at WOT

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  • greenguy103
    Noobie
    • Jan 2017
    • 15
    #1

    Turbo M20B25 Bucks at WOT

    Hey guys,

    When I give full throttle to my car the boost builds, but when I am wide open throttle the car will buck and stutter. It will do it a few times then continue to accelerate. Not sure if it might be an internal wastegate issue or anything. Just looking for some help.

    Thanks Yall!
    "Penny" - Single Turbo 2.5L 1987 325i
    Tags: None
    • Chris Spiegl
      Advanced Member
      • Aug 2016
      • 155
      #2
      Hey mate,
      I am having the same issue. I checked my CPS and the gap was way off. I would start there. Also check your TPS.

      What is your tuning like?
      1987 325is 2.8L Stroker Turbo "Little Pickle aka The Green Turbo Sled"

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        • Kershaw
          R3V OG
          • Feb 2010
          • 11822
          #3
          Yeah, what sort of engine management are you running? Definitely check the CPS gap.
          AWD > RWD

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            • TobyB
              R3V Elite
              • Oct 2011
              • 5163
              #4
              ...yeah, without more details on how you are set up, it's kind of hard to diagnose over the internets.

              Are you running any sort of WBo2 sensor to see what is going on with fuelling?

              t
              now, sometimes I just mess with people. It's more entertaining that way. george graves

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