GFB Hybrid TMS Dual Port Blow Off Valve for Select Subaru 2002-2020 (WRX / STI / Forester XT) T9203

Fits select 2002-2020 Subaru Forester XT, Impreza WRX, and WRX STI. The GFB Hybrid TMS Dual Port valve uses staged venting technology to provide the best of both worlds: quiet operation during normal driving and a sharp atmospheric vent under high boost. By utilizing a dual-outlet design, the valve recirculates air at low lift to maintain factory-style drivability and idle stability. As boost pressure and valve lift increase, the atmospheric port is exposed to provide the signature blow-off sound enthusiasts desire.

Equipped with GFB’s Turbo Management System (TMS) technology, this valve is designed to improve throttle response by reducing turbo lag. The kit includes modular plugs, allowing you to configure the unit for full recirculation, a 50/50 split, or full atmospheric operation depending on your tuning requirements and sound preference. It bolts directly to the factory intercooler flange for a straightforward installation.

• Dual-staged venting ports for improved drivability and sound
• Adjustable configuration: Full Recirc, 50/50, or Full Atmosphere
• TMS technology designed to minimize lag and improve boost recovery
• Direct bolt-on fitment for Subaru top-mount intercooler flanges
• Manufacturer Part Number: T9203