GFB T9025 RESPONS TMS ADJUSTABLE BIAS VENTING DIVERTER VALVE - FOCUS FOCUS RS MK1 Vauxhall Astra MK5 they fail to tackle the

they fail to tackle the fundamental performance and reliability issues associated with the OEM diverter valve - all they do is redirect the vented air

Turbo to crossover hose for the Focus ST 225

Designed to increase airflow on the Focus MK3 ST-D as a replacement of the restrictive standard boost pipe

This kit works on any vehicle

De-cat / Sports Cat downpipe

GFB T9025 RESPONS TMS ADJUSTABLE BIAS VENTING DIVERTER VALVE - FOCUS FOCUS RS MK1 Vauxhall Astra MK5 they fail to tackle theAll the performance with or without the noise! If 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 GFBs proven TMS Technology to ensure rapid boost recovery on gearshift and optimum throttle