03-06 Evolution 8 & 9 APS Dual Vent BOV

The APS Dual Vent Blow Off Valve for the 03-06 Evo 8 & 9 features 30 micron hard anodized, T6 billet aluminum body, low friction bronze piston, stainless steel spring & hardware and Viton 'O' rings.

The large primary vent is designed to plumb back into the Evo's inlet tract and ensures the best driveability during cruise conditions. More importantly, the APS Dual Vent BOV cures the problems seen with after market Vent to Atmosphere blow off valves by maintaining air flow through the OEM MAF sensor. And under spirited driving conditions with the turbocharger running high boost pressure levels, the APS Dual Vent BOV continues to vent through to the second stage port in order to expel the maximum amount of charge air possible.

Adjustments to the APS Dual Vent BOV's operation can be performed through the actuation adjustment screw allowing you to tune the venting characteristics to suit your driving style and modification levels.