Kinugawa Aluminum Racing Blow Off Valve

Blow off valve (BOV), bypass valve or dump valve is a pressure release
system present in most turbocharged engines. Its purpose is to prevent 

compressor surge, and reduce wear on the turbocharger and engine. Blowoff 

valves relieve the damaging effects of compressor "surge loading" by allowing

the compressed air to vent to the atmosphere, making a distinct hissing 

sound, or recirculate into the intake upstream of the compressor inlet.

A blow off valve is connected by a vacuum hose to the intake manifold after

the throttle plate. When the throttle is closed, the relative manifold pressure

drops below atmospheric pressure and the resulting pressure differential 

operates the blow off valve's piston. The excess pressure from the turbocharger is then vented into the atmosphere or recirculated into the intake 

upstream of the compressor inlet.

Brand New

1 x BOV

Kinugawa Turbo