GFB TMS Respons Blow Off Valve Kit for Select Subaru 2001-2020 (WRX / STI / Forester XT) T9003

Fits select 2001-2020 Subaru Impreza (RS/WRX/STI), WRX STI, and Forester XT models. The GFB Respons TMS (Turbo Management System) provides a solution for drivers who want the distinct blow-off sound without the common drivability issues associated with fixed-ratio atmospheric valves.

Standard atmosphere-venting valves often cause rich-running conditions, stalling, and backfiring on Subaru platforms. The GFB Respons solves this through its patented Venting Bias Adjustment. By rotating the adjustment ring, you can fine-tune exactly how much air is recirculated to the intake versus vented to the atmosphere. This allows you to achieve the desired sound level while maintaining the factory ECU's expected airflow for perfect idle and throttle transitions.

• TMS Technology: Engineered to ensure rapid boost recovery on gearshifts and superior throttle response compared to OE valves.
• Extreme Pressure Handling: Proven to withstand boost pressures in excess of 100 psi, ensuring it will never leak or fail under high-boost applications.
• Adjustability: Patented venting bias control allows for a silent stealth mode or a loud atmospheric vent.
• Direct Fit: Designed to bolt into factory mounting locations for a straightforward installation.
• Part Number: T9003