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Go Fast Bits


Go Fast Bits TMS Response Hybrid Blow Off Valve - Subaru 2002-2007 WRX / 2004+ STI

Go Fast Bits TMS Response Hybrid Blow Off Valve makes for an excellent upgrade over the stock blow off valve to hold more boost and to have a quicker response. 


  • Patented adjustable venting bias system found in the Stealth FX system
  • Allows you to control the amount of air that is vented to the atmosphere, or recirculated back into the intake to control the venting sound based on driver preference
  • You can achieve a vented blow-off valve sound without triggering a check engine light or other problems such as running rich or stalling
  • New hardware and tool will be provided to make this blow-off valve ready for the installation

    *Pictures used for marketing purposes only, actual product may vary

    • 2004-2020 Subaru STI
    • 2002-2007 Subaru WRX
    • 2006-2008 Subaru Forester XT

    LIFETIME WARRANTY - Requires registration of product after purchase.


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