Twin Vent Blow Off Valve - Top Mount Intercooler.
BOV - Top Mount.
The Subaru Impreza WRX/STI 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/STI. It is an ideal enhancement for applications using the standard turbocharger up to large 600 hp units.

Application: MY97/98
Part No. 990-047-000
Price: £143.00 +VAT

Twin Vent Blow Off Valve - Top Mount Intercooler
BOV - Top Mount.
The Subaru Impreza WRX/STI 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/STI. It is an ideal enhancement for applications using the standard turbocharger up to large 600 hp units.

Application: MY99/00
Part No. 990-047-100
Price: £143.00 +VAT

Twin Vent Blow Off Valve - Top Mount Intercooler
BOV - Top Mount.
With its huge capacity the APS blow off valve gives you the ultimate in turbocharger durability and improved turbo response particularly during gear changes. The large primary vent is designed to plumb back to the standard entry point which ensures the best driveability during cruise conditions and cures the problems seen with after market external single venting blow off valves.

Twin Vent Blow Off Valve - Front Mount Intercooler
BOV - Front Mount
The Subaru Impreza WRX/STI has unique blow off valve requirements particularly when fitted with a large turbocharger. It is an ideal enhancement for applications using the standard turbocharger up to large 600 hp units. The large primary vent is designed to plumb back to the standard entry point which ensures the best driveability during cruise conditions and cures the problems seen with after market external single venting blow off valves.