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Reduces dynamic noise levels by approximately 2–3 decibels
sporty tone during more dynamic riding
featuring a 300-cell sports catalytic converter
Are any modifications to the car required for fitting
made entirely from our own titanium
GFB - Blow Off Valve TMS - Subaru WRX / STI / Forester audi-q5-fy---17----all-esi2421094 Reduces dynamic noise levels byThe GFB Respons TMS Blow Off Valve has been specially designed for the Subaru WRX (20012007), STI (20012011) and Forester (20062008). This valve offers a solution to problems such as backfiring and stalling by allowing you to adjust the venting bias, so you can enjoy the sound of the Blow Off Valve without any drawbacks. Improved Boost Control: Retains more boost than factory valves and can handle boost pressures of up to 100 psi and above. Faster
