FORGE atmospheric dump valve for SUBARU Impreza WRX

Discover the FORGE atmospheric dump valve for SUBARU Impreza WRX, an essential component for optimising your engine’s boost. But what exactly does it do, and how does it work? The dump valve, also known as a blow-off valve, is designed to regulate the pressure generated by the turbo. When your turbo spins at full speed, it generates high boost. However, it cannot stop or slow down suddenly, as the intake system remains pressurised. With no escape route, this pressure is forced back into the compressor, which can cause harmful reverse rotation.

The dump valve mounts on the intake pipe and is equipped with a spring-loaded diaphragm or a piston. It opens as soon as a rise in pressure is detected, allowing air to escape briefly. This happens in a fraction of a second, just long enough to change gear, and boost resumes almost instantly! Thanks to this technology, your compressor is protected and your engine’s performance is optimised.