GFB Hybrid TMS Dual Port Blow Off Valve Subaru WRX 2008-2014 / Legacy GT | T9201
Video description
Experience the blow-off valve that started it all with the GFB Hybrid TMS Dual Port Blow Off Valve for the 2008-2014 Subaru WRX and 2005-2009 Subaru Legacy GT. Originally introduced by Go Fast Bits as the world's first dual-port blow-off valve, the Hybrid TMS combines the unmistakable sound of an atmospheric BOV with the drivability benefits of a recirculating bypass valve.
Unlike traditional atmospheric blow-off valves that can cause rich conditions, stalling, or backfiring on MAF-equipped Subarus, the Hybrid TMS uses a staged dual-port design that opens the recirculation port first before venting to atmosphere. The result is smoother drivability while still delivering the iconic turbo blow-off sound enthusiasts love.
Fitment:
Subaru WRX (2008-2014)
Subaru Legacy GT (2005-2009)
Features
- Dual-port staged venting design
- Configurable for:
Full Recirculation
50/50 Hybrid Venting
Full Atmosphere Venting
- Direct bolt-on installation
- Designed for MAF-equipped turbocharged Subaru applications
- Award-winning GFB engineering

