Go Fast Bits Respons Bypass Valve WRX (2002-2007) STI (2004-2018) Porsche - Smooth piping eliminates restrictions

- Smooth piping eliminates restrictions and improves airflow

You will feel more noise

resulting in better cooling

The specs for this winning blue Gram Lights 57Xtreme Wheel

All 2015+ WRX Mishimoto radiators come with a Mishimoto 1

Go Fast Bits Respons Bypass Valve WRX (2002-2007) STI (2004-2018) Porsche - Smooth piping eliminates restrictionsThe Go Fast Bits Respons blow off bypass valve system for WRX STI Forester is much more than simply a noise maker or a factory valve replacement. The Go Fast Bits Respons valve features the GFB Turbo Management System (TMS), designed specifically for the purpose of turbo lag reduction. Go Fast Bits in house testing facilities have measured a return to peak boost up to 30% faster between shifts than most factory systems, giving you quicker on off boost