The Kompact Dual Port blow-off valve is a direct replacement for the stock bypass valve on the Subaru WRX MY08-14 as well as the new Nissan Juke/Pulsar Turbo. Standard valves crack with age and heat cycling, and rely on rubber diaphragms which perish. They're also simply not designed to handle incre ...mere

Dual outlet-type BOV. The Kompact Dual Port vents both to the atmosphere and back into the air intake. Ports with sequential timing allow quieter operation during normal driving, while still offering the performance and sound of a vent-to-atmosphere BOV when the going gets harder. The standard blow- ...mere