Blitz Dump Valve Kit - Blow Off Valve - 70487 - Impreza GH8, Forester SH9, Legacy BP5-BL5 Toyota Aristo 3.0 TT Vertex - JZS147 - 10/91> 08/97 4 Bushes in kit

4 Bushes in kit

275 x 22mm

Standard Alignment - 80K Hardness - Fast Road

The acoustics of the de-cat manifold have been finely tuned to complement the tone of the extended Cobra Sport range for the GT86 offering the ultimate upgrade in terms of possible power increase and pitch perfect exhaust tone

Torque increase 136 to 170 lb-ft

Blitz Dump Valve Kit - Blow Off Valve - 70487 - Impreza GH8, Forester SH9, Legacy BP5-BL5 Toyota Aristo 3.0 TT Vertex - JZS147 - 10/91> 08/97 4 Bushes in kitBlitz Venturi Drive Super Sound Blow Off Valve Release Type Deep Metal Coating The all new ribbed main body dissipates heat more effectively and the venturi shaped funnel creates a sharp dynamic sound. Venturi Drive dump valves also feature "Dual Drive" for maximum response, a small port for low boost and a larger port for high boost. The main purpose of the dump valves is to improve the response of the turbo by quickly releasing the boost pressure