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This is a discussion on Boost surge/BCS within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Ok, I'll just keep turning it clockwise at half turn intervals and see it that fixes the feeling of boost ...

  1. #31
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    Ok, I'll just keep turning it clockwise at half turn intervals and see it that fixes the feeling of boost surge, and then hopefully a gauge can tell me the rest/

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  3. #32
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    Ok, so it has been 10 days, but I am back with a boost gauge and more sad results.

    While reading the boost gauge in gears 2-5 and WOT, the gauge will peak to ~11 psi, then drop to 0, back to 11, back to 0, etc. This happens from about 2.5k - redline. So, it appears to be rather severe boost spike or surge or whatever you want to call it.

    I finally found out yesterday that instead of turning the entire actuator arm, that you are only supposed to turn the "paddle" on the end. So, I ended up with a final clockwise turn count of 3 turns and the same, or possibly worse results. Should I try releasing preload by turning it counter clockwise?

    EDIT: Im not sure if I have mentioned this, but the car has 0 mods is 100% stock with 101k. Stock turbo. There has been a CEL on since I bought it. I was told this is a gas cap problem. I had the code read at AutoZone and dude said it was an o2 sensor, but im not sure.

    Could a faulty o2 sensor cause boost spike??
    Last edited by maw230; 04-22-2011 at 09:27 AM.

  4. #33
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    Help a car noob out!

  5. #34
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    Don't make me go to NASIOC

  6. #35
    Moderator Donkey's Avatar
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    Quote Originally Posted by maw230 View Post
    Ok, so after removing the t fitting I noticed that the end that sends air to the wastegate has a tiny brass restrictor installed in the tip. Is that normal?
    The restrictor goes to the compressor,not the wastegate.
    Resident Adviser @ WTF Tuning, LLC
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  7. #36
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    Thanks, but I the nasioc guys helped me get it fixed earlier this afternoon!

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