Over boosting!!!
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This is a discussion on Over boosting!!! within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Hello everyone, So, I have recently purchased a WRX and installed a boost gauge that after driving the car under ...

  1. #1
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    Over boosting!!!

    Hello everyone,

    So, I have recently purchased a WRX and installed a boost gauge that after driving the car under different circumstances, I believe to be fairly accurate. I also just recently realized, that I had accidentally taken out the restrictor pill in the vacuum line. So after reinstalling it in the right place, I drove the car and noticed that under WOT that the boost jumps up to 17 psi and then corrects to about 14, and then hovers around 15 and stays there while I accelerate. The car is completely stock and I have no idea why it's doing this. Before I put the restrictor pill in, it was never boosting over 14ish and the boost was steady. Any ideas?

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  3. #2
    Registered User Killerkanadian's Avatar
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    Has your car thrown trouble codes?

  4. #3
    Admiral Ackbar the 1st mycologist's Avatar
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    Does the car have an aftermarket downpipe?
    "From a little spark may burst a mighty flame." - Dante
    "The stitch is lost unless the thread is knotted." - Italian proverb

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    The car has never thrown any code and is completely stock. No after market downpipe

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    And by the way, it's a 2002. If that helps at all

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    Captain James of the SS Impreza has gone down with the ship Drews's Avatar
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    Do you have any form of boost control like an EBCS or a manual boost controller?
    Hawk-Eye Alliance #Eleventy,000,000,000|N.E.R.D. Member 20,000
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    Resident Clubdub Debbie Downer. I'd love your ideas if you kept them to yourself. Subarus suck, get a new wife.

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    Quote Originally Posted by Drews View Post
    Do you have any form of boost control like an EBCS or a manual boost controller?
    No, everything is how the car is supposed to be set up stock. Although if this can't be fixed easily or if I can't figure out what the problem is, I was going to buy a grimmspeed bcs

  9. #8
    Captain James of the SS Impreza has gone down with the ship Drews's Avatar
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    Quote Originally Posted by Mercasio View Post
    No, everything is how the car is supposed to be set up stock. Although if this can't be fixed easily or if I can't figure out what the problem is, I was going to buy a grimmspeed bcs
    If I did it over again, I'd go with the perrin.
    Hawk-Eye Alliance #Eleventy,000,000,000|N.E.R.D. Member 20,000
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    Resident Clubdub Debbie Downer. I'd love your ideas if you kept them to yourself. Subarus suck, get a new wife.

    Never argue with idiots. They'll drag you to their level and beat you with experience.

  10. #9
    Admiral Ackbar the 1st mycologist's Avatar
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    Someone probably fiddled with the wastegate actuator:

    Adiusting wastegate actuator arm works yes or no

    Completely ignore 2.0 when you review that.
    "From a little spark may burst a mighty flame." - Dante
    "The stitch is lost unless the thread is knotted." - Italian proverb

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