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designed to boost power and compatible with the standard exhaust manifold and other engine components
Available in a gloss finish
atmospheric venting at higher loads
Not only does this save you from having to install a separate AFR gauge
15% less restrictive than the original system
GFB - Respons TMS - Subaru Impreza WRX / Forester 15+ Diversen designed to boost power andIf your car is experiencing problems such as backfiring and stalling when using a fixed ratio atmospheric to ventilation BOV, the GFB Respons offers a solution. With the ability to adjust the ventilation ratio, you can achieve that characteristic blow off sound without the adverse effects. Like all GFB valves, the Respons utilises GFBs tried and tested TMS Technology, which ensures rapid boost recovery when changing gear and optimum throttle response,
