The Blow Off Valve is the part that makes the high-pitched woosh sound between shifts on a Turbocharged Engine. Not only do they sound cool, but they also benefit the engine. The Turbo spools on acceleration and builds Turbo Boost. When you shift gears, the throttle body closes for a second when you release the gas pedal. This traps Turbo Boost Pressure in the intake pipe. The only place for this Boost to go is back through the turbo, which slows its rotation down. When you install a Turbo Blow Off Valve on the Intake Pipe, that extra Turbo Boost Pressure can escape through it between Gear Shifts. When Turbo Boost Pressure escapes through the Blow Off Valve this Creates the Sound that everyone hears. When you get into the next gear and accelerate again, the Turbo spools up again, but faster because the Blow Off Valve has eliminated "Pressure Surge". Also, GReddy makes a Pressure Relief Valve that works just like the Blow Off Valve and is designed to be a back up system for cars in case of a boost spike or for people that shift fast.

Brands We Carry:

- Blow Off Valve
Blitz SS Dual Drive Blow Off Valve
GReddy Type RS (up to 27psi)
GReddy Type S (Accessories and Outlet Adapters Only)
GReddy Type R (12lbs+)

- Relief Valve
GReddy

- Blow Off Valve Adapters, Replacement Springs & Maintenance
Blitz
GReddy