Forge Blow off valve kit Subaru Impreza WRX 01-07 / STI 01-18 ford-mustang-s550---15-23-2-3t---317---290-esi9694104 Upgrading the ignition coils is

Upgrading the ignition coils is recommended for Stage 1 tuning or higher

Material: Billet 6061-T6 aluminium

Length: adjustable

Polyurethane sway bar

Forge Blow off valve kit Subaru Impreza WRX 01-07 / STI 01-18 ford-mustang-s550---15-23-2-3t---317---290-esi9694104 Upgrading the ignition coils isThe Forge Blow Off Valve Kit for the Subaru Impreza WRX 01 07 and STI 01 18 is a direct replacement for the OEM diverter valve. This atmospheric system allows the charge air to escape into the atmosphere, producing the familiar wooosh sound. The valve is piston operated and offers both faster throttle response and the ability to maintain higher turbo pressure. Features Direct bolt on Atmospheric blow off sound Internal twin pistons for faster response