

Turbo lag is the enemy of any turbo charged vehicle. Our Blow Off Valves are easily adjustable to prevent both premature boost leakage and compressor surge. Each blow off valve is made of durable cast and billet aluminum frame, and the valve to diapharm ratio provide preformance that cheep piston type blow off valves can not offer. The spring stiffness adjustment screw and the two different sizes give the GReddy user the option to match vehicles with mild upgrades to heavily tuned engines. Also available in easy to install kit form for most Japanese turbo charged vehicles.
| Description | Year | Type | Part # |
|---|---|---|---|
| Mazda | |||
| RX-7 Turbo | 1987-92 | S | 11541010 |
| RX-7 T/T | 1993-96 | S | 11541011 |
| Mitsubishi | |||
| Eclipse GST/GSX | 1995-97 | S | 11531010 |
| Subaru | |||
| WRX | 2002-on | S | 11561001 |
| Toyota | |||
| MR-2 Turbo | 1990-96 | S | 11511000 |
| Supra Turbo | 1987-92 | S | 11511011 |
| Supra T/T | 1993-97 | S | 11511050 |
| Universal | |||
| Type S | Universal | 11501650 | |
| Type R | Universal | with Std. spring | 11501660 |
| Typr R | Universal | with Stiff spring | 11501661 |
| Related Parts | |||
| Steel weld-on Flange | S/R | 11900450 | |
| Aluminum weld-on Flange | S/R | 11900451 | |
| Outlet Adapter 40mm | R | 11900490 | |
| Outlet Adapter 45mm | R | 11900491 | |
| Outlet Adaptor 19-21mm | R | 11900470 | |
| Outlet Adapter 28-35mm | R | 11900471 | |
| Outlet Adapter 16mm | S | 11900481 | |
| Outlet Adapter 19mm | S | 11900482 | |
| Outlet Adapter 29mm | S | 11900483 | |
| STD Spring Replacement | R | 11900501 | |
| Stiff Spring Replacement | R | 11900510 | |
| Replacement Diaphragm | S | 99900061 | |
| Replacement Diaphragm | R | 99900062 | |

Use the GReddy Relief Valve as a secondary boost safety device. By adjusting the set screw you can control the release point (from .08 kg/mm2 to 2.0 kg/mm2), protecting your intake manifold and engine from boost spikes and overboosting. Made from billet aluminum it has been anodized blue.
| Description | Year | Type | Part # |
|---|---|---|---|
| Relief Valve / Adapter | |||
| Relief Valve | 11501710 | ||
| Relief Valve Adapter | 11900520 | ||
Some items listed are legal in California only for racing vehicles which may never be used upon a highway.