Turbosmart Blow Off Valves

Turbosmart’s blow-off valves release boost pressure when the throttle closes, and the first choice is where that air goes. Plumb Back valves return it to the intake, as a factory diverter valve does, which keeps the air-mass reading correct on cars that measure air before the turbo. Vent-to-atmosphere designs such as the RacePort and Vee Port Pro release it into the engine bay, and Dual Port valves split the flow between the two.

Kompact valves are the compact direct-fit range and the largest group, often made for a particular engine and identified by a VR number in the title. The Kompact EM versions replace an electronically controlled factory valve and plug into the original connector. Larger valves such as the Big Bubba are made for large-capacity turbocharged, supercharged and diesel engines.

The listing also holds the parts that keep a valve working. They include plumb-back fittings in 25 mm and 34 mm, V-band and hose blanking plates and plugs, O-ring kits, replacement solenoids and spring kits. A different spring changes the pressure at which the valve opens.

Choose by the fitting on your intake pipe, how the engine measures its air and the boost level.