The GFB Hybrid TMS dual-port blow-off valve is a direct-fit bolt-on for 2001–2007 Subaru WRX and 2005–2008 Forester XT applications, offering configurable venting between full recirculation, 50/50 and full atmosphere using supplied blanking plugs. The staged dual-outlet design keeps sensitive airflow meters happy while providing selectable sound and uses TMS technology to improve boost recovery on gearshift.
GFB HYBRID TMS Dual Port 01-07 Subaru WRX / 05-08 Forester XT