GFB 15+ Subaru WRX 2.0L (FA20DIT) AWD Sedan TMS Respons Blow Off Valve Kit

  • Sale
  • Regular price $281.70


This makes for an excellent upgrade over the stock blow off valve to hold more boost and to have a quicker response. 

Here are the key features:

  • 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