Performance Dual Piston 25mm Blow Off Valve – Designed for VW & Audi 1.8T. Upgrade your ride with our premium CNC-machined T6061 billet aluminum blow-off valve. Unlike standard single-piston valves, our Dual Piston technology is specifically engineered for vehicles with Mass Air Flow (MAF) sensors (like the VW/Audi 1.8T).
