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Mash on gas pedal, car wants to die...

Discussion in 'FAST Support Forum' started by J-440, Oct 29, 2017.

  1. J-440

    J-440 Member

    Jun 16, 2012
    Anytime I "get on it" the car falls on its face. If I slowly raise the speed, the car will accelerate no problem. Whether it's at a dead stop or highway speeds, if I mash the gas pedal, the car wants to die and backfires a little. Any thoughts?
  2. A A

    A A Well-Known Member

    Jun 22, 2014
    You run the XFI. Log the event and tune, and someone can probably point you in the right direction.
  3. Fastmanefi

    Fastmanefi Active Member

    Jun 4, 2011
    Sonora, CA
    Email me the tune and the log.
  4. Fastnofast

    Fastnofast Member

    May 16, 2017
    Did you check something before ?
    Hoses, map sensor ? Harness ?
    Do you have an error code ?

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