Forge open circuit dump valve Subaru V4 1996-1998

Reference: FO-FMDVV4010

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A dump valve or turbo valve reduces the reaction time of a turbo and improves its reliability. The turbo compresses the air in the intake. However, when the throttle is released, the throttle valve closes and the compressed air can no longer go into the intake, resulting in a significant increase in pressure in the air system.

This phenomenon slows down the turbo and, inevitably, lengthens its response time (which, at the same time, increases wear).

The purpose of installing a dump valve is to release this excess air pressure very quickly when the throttle is released. The air is evacuated by the dump valve either externally (hence the pschitt) or internally (back into the intake manifold).

This Forge dump valve allows the control of the turbo boost thanks to the discharge valve.

Big diameter 33mm

Circuit: double piston

Type: Open circuit

Vehicle compatibility: Subaru Impreza V4 (1996-1998)

Products intended for vehicle modification for competition purposes may render their use prohibited on public roads, insofar as they significantly alter the vehicle's characteristics as specified in the type-approval certificate issued by the relevant authorities (noise level, pollutant emissions, maximum speed, tire dimensions, etc.).