T9001 RESPONS TMS T9001 ADJUSTABLE-BIAS VENTING DIVERTER VALVE / BLOW-OFF VALVE - SUBARU IMPREZA GR 2.5 F31 328i The USR fine-groove pattern gives

The USR fine-groove pattern gives crisp pedal response

N55 anti surge valve

Special coated tubes with OEM specified Double Lock Seam Joints for enhanced durability

Ready to unleash your BMW 540i G30-G31 B58 with a proper software upgrade

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T9001 RESPONS TMS T9001 ADJUSTABLE-BIAS VENTING DIVERTER VALVE / BLOW-OFF VALVE - SUBARU IMPREZA GR 2.5 F31 328i The USR fine-groove pattern givesAll 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