BOV Kompact Dual Port Subaru 98-00 Forester MY99 WRXDual outlet type BOV explicitly designed for the Subaru 98 00 Forester and MY99 WRX. The Kompact Dual Port vents into the atmosphere and back into the air intake. Ports with sequential timing allow quieter operation during everyday driving while offering the performance and sound of a vent to atmosphere BOV when the going gets more demanding. The Turbosmart Kompact valve is a highly durable machined billet construction. This prevents the turbo from