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Thread: I miss turbo boost, what is wrong?

  
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    c20let2k's Avatar
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    I miss turbo boost, what is wrong?

    Fittet a boost gauge today and my z20let are only boosting 0.5 overboost and 0.38-0.4 standard..

    I don't have any leaks or something like that, no smoke or bad sounds from the turbo ether..

    I have tried to tightup the wastegate but it did'nt change much..

    What boost are standard for the z20let?
    Anyone that knows what my problem might be?

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    buckle's Avatar
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    Are those BAR figures?

    It should OB to 9-10psi, and hold 7-8psi. which is roughly something like 0.7BAR OB and 0.5/6 BAR holding?

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    Yes it loads about 7psi OB and stays at 5.5psi..
    A little to low, the car did go better before, and why doest'n work tight'n the wastegatebolt?

    If i nap of the hore from the n75 (boost valve) it loads fine over 7psi.. I don't give full trottle when i tried that!!

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    I'm gonna drive at a racetrack tomorrow and i'm must find out why i'm missing boost..

    I'm thinking about the accumulator could gone bad?

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