07 WRX 4th and 5th gear overboost and after 4500 rpm, loss of boost ?!? Help ! - Page 2
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This is a discussion on 07 WRX 4th and 5th gear overboost and after 4500 rpm, loss of boost ?!? Help ! within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; The boost has to taper on the stock WRX turbos. It has nothing to do with the tuning and everything ...

  1. #16
    Moderator Donkey's Avatar
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    I Support ClubWRX
    The boost has to taper on the stock WRX turbos. It has nothing to do with the tuning and everything to do with the size of the turbo and it's efficiency range.

    Stealth 316 - Turbocharger Compressor Flow Maps

    Also "boost creep" and "boost spike" are two different things.

    Turbocharger Boost Creep and Spiking
    Resident Adviser @ WTF Tuning, LLC
    2002 FORESTER S
    1998 FORESTER S




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  3. #17
    Registered User
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    Feb 2011
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    Elkins Park, PA
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    Thanks for the links, Donkey. Very informative. I learned something today. That's pretty neat.
    Josh
    Blue 08 WRX Limited-Cobb AP Stage 2-AEM CAI-Perrin Short throw/bushings-Turbosmart BPV

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