The Kompact Series BOVs have been designed as a bolt-on replacement for plastic factory Bosch or Denso BOVs, the Kompact Series products offer superior flow, full adjustability and greater structural integrity under boost. Ideal for cars with constrained engine bay access like VWs, Audis, Porsches. 

Hybrid-type BOV. Dual Port vents both to the atmosphere and back into the air intake. Dual ports with sequential timing allow quieter operation during normal driving, while getting all the benefits of a Supersonic BOV under race conditions. Easily converted to a fully atmo or fully bypass unit.