Boost leak, possibly throttle body or BOV?
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This is a discussion on Boost leak, possibly throttle body or BOV? within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; I got a 2012 WRX with the below listed mods. The stock throttle body hose literally disintegrated so I replaced ...

  1. #1
    Registered User Rexosaurous's Avatar
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    Boost leak, possibly throttle body or BOV?

    I got a 2012 WRX with the below listed mods. The stock throttle body hose literally disintegrated so I replaced it with a Grimmspeed Throttle Body hose. I had to take the TMIC off to fix it, knocked the BOV vacuum line off, replaced it. Ran fine. Not when ever I get into boost i can hear a loud wind rushing noise to overpowers the turbo spool. No CEL's. Obvious performance difference when boosting. Any idea's?
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    Registered User naked_dave1's Avatar
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    Sound anything like the issue I had in this post?

    Boost Leak? 2012 WRX

  4. #3
    and the Funky Bunch Calvinball's Avatar
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    Quote Originally Posted by Rexosaurous View Post
    I got a 2012 WRX with the below listed mods. The stock throttle body hose literally disintegrated so I replaced it with a Grimmspeed Throttle Body hose. I had to take the TMIC off to fix it, knocked the BOV vacuum line off, replaced it. Ran fine. Not when ever I get into boost i can hear a loud wind rushing noise to overpowers the turbo spool. No CEL's. Obvious performance difference when boosting. Any idea's?
    It's been doing this since you installed the new hose? Get back in there and retighten everything, there's a leak somewhere.
    - Will
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    Current Car: 2014 Golf TDI
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