GFB TMS Respons Blow Off Valve Kit - 1999-2000 Subaru WRX / STI PDM_led-lighting This simple mod increases your

This simple mod increases your brake performance while qualifying for almost all *SCCA and *NASA classes

Note: Regular oil filter replacement is crucial for maintaining the proper functioning of your Subaru's engine

Wideband O2 compatible with several fuel types

On a turbocharged Subaru EJ or FA engine

The DW440 measures 4-inches from inlet to outlet

GFB TMS Respons Blow Off Valve Kit - 1999-2000 Subaru WRX / STI PDM_led-lighting This simple mod increases yourIf cars like yours typically suffer issues such as backfiring and stalling when using a fixed ratio atmosphere venting BOV, the Respons can help. By adjusting the venting bias to suit the car you can achieve a blow off sound without having to put up with the issues. Like all GFB valves, the Respons utilises GFB's proven TMS Technology to ensure rapid boost recovery on gearshift and optimum throttle response, as well as the ability to withstand boost