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Thread: 14 6.2l w/4L80E PROBLEMS

  1. #1
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    14 6.2l w/4L80E PROBLEMS

    Recently put a 6.2L out of a 2014 stingray into my 86 c-10 with a 4l80E built trans and a 2800 stall. Using a stand alone ez-tcu from TCI, vehicle starts and moves. Problem is that it will not upshift until i let off the throttle, also feels like it is not hitting the higher rpm's and lacking power. Any body have any suggestions?

  2. #2
    Advanced Tuner dhoagland's Avatar
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    Post up a Tune and Log for better response..
    Was the original vehicle Manual or Automatic Transmission?
    If it was an Auto maybe ECM is looking for some input from the Trans.
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  3. #3
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    It was out of a standard vehicle, talked to a TCI tech and they think I have a faulty ez-tcu module. Anybody ran in to this before?

  4. #4
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    Quote Originally Posted by FIRE519 View Post
    It was out of a standard vehicle, talked to a TCI tech and they think I have a faulty ez-tcu module. Anybody ran in to this before?
    Does the EZ-TCU read the vehicle speed and TPS correctly?

  5. #5
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    Wouldn't a T42 TCM communicate with the E92?