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  1. #1

    Default Twin turbo blowing air out the inlet

    I need some help from you turbo guys, primarily twin turbo, a customer brought me a twin turbo Impy, the problem is at idle each turbo takes its turn on blowing pressure (air) out the turbo inlet, even when you drive, it sounds like 18 wheelers setting their air brakes one after another, any idea why this is, and of course it will not rev mid throttle, like its fighting itself, Ive tuned twin turbo before without any issues, especially like this one..Thanks again.

  2. #2
    Long Live the Opti


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    Sean
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    Default

    What's the wastegate setup? Single or individual gates on either side?
    Quote Originally Posted by Ryan Stout View Post
    I would try to work my neck muscles but I'm not invited to the LS guy parties.

  3. #3

    Default

    Quote Originally Posted by Fastbird View Post
    What's the wastegate setup? Single or individual gates on either side?
    I believe he said one on each side.

  4. #4
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    Default

    Wastegate on each turbo

  5. #5
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    Default



    Clip of noise

  6. #6

    Default

    Someone said this


    Have you checked for make sure the diaphragms aren't leaking at the gate or they possibly may need to be adjusted

  7. #7
    Long Live the Opti


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    Sean
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    1999 Twin Turbo Corvette
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    Default

    Woah, that's weird. That's where I was going, towards a wastegate on it's way out.
    Quote Originally Posted by Ryan Stout View Post
    I would try to work my neck muscles but I'm not invited to the LS guy parties.

  8. #8

    Default

    At idle I would lean more towards not enough BOV

    Or massively undersized turbos so thats its like a blower car and needs to vent a lot of air at idle.
    Correlation does not imply causation.

    Una salus victis nullam sperare salutem

  9. #9

    Default

    Yup that what it seems like, Ive never seen anything like this, and as you accelerated the switching of air escaping get faster also.

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