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Thread: Invidia Downpipe problems

  1. Top Of Page | #1
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    Invidia Downpipe problems

    So I have an Invidia dp with the divorced wastegate, and I'm having problems at high boost with my boost spiking. It's only for 100 rpms, but I'm hitting 24.8 psi on a stock vf40. I have my wastegate duty cycle set to 50% on a GM EBCS at 21psi. I'm kinda thinking that the problem might be that the wastegate flapper is hitting the divider in the downpipe so it can't open up enough to keep the boost levels at the set amount. I've heard that this can be a problem, but never any first hand accounts.

    Has anybody here ever dealt with this situation before?

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    System Operator IGOTASUBARU's Avatar

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    I never had that issue. Sorry.

  3. Top Of Page | #3
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    Quote Originally Posted by Twiz View Post
    What is it tuned with?
    Usually a laptop... :P

    That's the first I've ever heard of that issue.


    Sent from my iPhone using Tapatalk

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    Open source

  5. Top Of Page | #5
    Director HolyCrapItsFast's Avatar

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    ^ +1

    What exactly is the nature of the over boosting condition... Does it spike and then drop? Does it over boost and keep going higher? Does it just overshoot target or does it over boost and engine cut?

  6. Top Of Page | #6
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    Quote Originally Posted by Twiz View Post
    I'm going to shake you

    Shaking Adam Syndrome?

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