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Thread: Commodore VZ L98 E38 Flat Spot After Restart

  1. #1
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    Commodore VZ L98 E38 Flat Spot After Restart

    Cammed VZ L98 Mafless/SD will have a massive flat spot like throttle doesnt work briefly until you pump it twice then it never does it again until its restarted. It happens soon as you begin to move the car, wont do it while stationary.
    Issue was there before the cam install and appeared after it was mafless tuned with stock cam.
    I originally thought it was only after a reflash and have zeroed inj tip temp table but didnt fix it.
    Last edited by mattmonaro; 01-16-2022 at 09:54 PM.

  2. #2
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    Quote Originally Posted by mattmonaro View Post
    Cammed VZ L98 Mafless/SD will have a massive flat spot like throttle doesnt work briefly until you pump it twice then it never does it again until its restarted. It happens soon as you begin to move the car, wont do it while stationary.
    Issue was there before the cam install and appeared after it was mafless tuned with stock cam.
    I originally thought it was only after a reflash and have zeroed inj tip temp table but didnt fix it.
    Post your tune and I'll see if I can help.

  3. #3
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    Awesome thankyou Kevin
    Tune file attached
    I can confirm it will do it while stationary sometimes too
    Last edited by mattmonaro; 01-17-2022 at 07:55 PM.

  4. #4
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    Quote Originally Posted by mattmonaro View Post
    Awesome thankyou Kevin
    Tune file attached
    I can confirm it will do it while stationary sometimes too
    I just failed the MAF sensor in your tune. This should fix the issue.

    Jason Al-Saeedy VZ Thunder 6Litre Auto OTR Mafless Stealth Cam KW MOD.hpt

  5. #5
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    Quote Originally Posted by kevin87turbot View Post
    I just failed the MAF sensor in your tune. This should fix the issue.

    Jason Al-Saeedy VZ Thunder 6Litre Auto OTR Mafless Stealth Cam KW MOD.hpt
    Cheers ile give it a try
    Never had to do that previously