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Unleash Performance and Sound with GFB Hybrid TMS

The GFB Hybrid TMS Dual Port Blow Off Valve is the ultimate upgrade for the 2015-2020 Subaru WRX and 2014-2018 Forester 2.0XT. If you are tired of the quiet factory bypass valve and want a component that delivers both performance and an audible edge, this is the perfect choice. GFB’s staged venting technology ensures that your engine receives the correct amount of recirculated air to maintain a smooth idle and prevent rich running conditions, while still providing that distinct blow-off sound under heavy load.

Why Upgrade Your WRX/Forester Valve?

• Optimized Airflow: Staged design balances recirculation and atmospheric venting for peak performance.
• Faster Throttle Response: Reduces boost lag significantly during gear changes.
• Direct Fitment: Specifically designed for the FA20 engine platform in the WRX and Forester XT.
• Reliable Construction: High-quality materials ensure long-term durability under increased boost pressures.

This valve is a must-have for any enthusiast looking to improve their turbocharger efficiency. It is designed to work in harmony with your factory ECU, ensuring no check engine lights while providing the performance gains you crave. Whether you are hitting the streets or the track, you will notice the difference in throttle response and turbocharger longevity. Upgrade your build today with premium parts from GGCRACING.