The Subaru Impreza WRX has unique blow off valve requirements particularly when fitted with a large turbocharger. A blow off valve is a device that releases pressure from the turbocharger when the throttle is released.

   APS designed the APS high volume twin vent blow off valve specifically for the Subaru Impreza WRX. It is an ideal enhancement for applications using the standard turbocharger up to large 600 hp units.

   With its huge capacity the APS blow off valve gives you the ultimate in turbocharger durability and improved turbo response particularly during gear changes. A mammoth 1.375" (34 mm) internal bore size delivers huge capacity and at full piston travel, all ports are fully exposed for maximum blow off volume.

   The APS twin vent BOV features 30 micron anodized, T6 billet aluminium body, low friction bronze piston, all stainless steel hardware including spring and Viton 'O' rings.

   Fine adjustment to blow off valve operation can be performed through the actuation adjustment screw for optimum configuration.

Front Mount