The GReddy Type-RS is one of the company's discontinued blow-off valve models. It was replaced by the GReddy Type-RZ as the top-end, adjustable blow-off valve for high-horsepower turbocharged vehicles. The Type-RS features polished aluminum construction, with a decorative blue air horn that produces a loud, customized blow-off valve venting noise between shifts. The GReddy Type-RS also has an adjustable tension spring. This allows the Type-RS to work well with lower-boost applications, and capable of being readily upgraded to hold the higher boost pressures of big-turbo setups.
Locate the GReddy Type-RS blow-off valve in the engine compartment, mounted to the upper pipe of the turbo intercooler. Protruding from the top of the Type-RS is a threaded screw, secured in place by a locking nut. This is the Type-RS adjustment screw.
Loosen the adjustment screw locking nut with an adjustable crescent wrench. Move the locking nut a few threads up the adjustment screw. Don't set the spring tension too tight, because this will restrict proper operation of the inner air release valve. This is why you should only tension the adjustment screw a few threads at a time.
Thread the adjustment screw into the Type-RS blow-off valve by hand. The locking nut will secure the adjustment screw in place once it meets the top of the blow-off valve body. Once the locking nut is secured in place, tighten it with an adjustable crescent wrench to make sure it is locked in place.
