GReddy 11501660 Blowoff Valve - Type R
GReddy Blow Off Valves are easily adjustable to eliminate
compressor surge and preventing premature boost leakage, while
increasing boost response between shifts. Each valve is made of
durable cast and billet aluminum frame and the valve to diaphragm
ratio provides performance that cheap piston types cannot offer.
The spring stiffness adjustment screw and the three different sizes
give the GReddy user the option to match vehicles with mild
upgrades to heavily tuned engines. There are many factors in
matching a blow-off valve to an application, valve location,
turbocharger size and pressure, but as a general rule of thumb, we
recommend Type R for 260-450hp and the Stiff Spring Type R for over
400hp applications. Also available in easy to install kit form for
many turbocharged vehicles.