GFB Respons TMS Blow Off Valve

Adjust how loud the blow-off sound is. Recirculate all of the air for silent factory operation, vent it all to atmosphere for maximum noise, or set it ANYWHERE in between to suit your preference.

Get a blow-off sound WITHOUT causing stalling, backfiring, or any other BOV-related issues, even on a car with a sensitive airflow meter (MAF).

Better throttle response

Faster boost recovery on gearshift

Unlimited boost-holding!

Suits Vehicles: 

Subaru GT MY01-02 SF,SF5 130kw Petrol Engine AWD Closed Off-Road Vehicle 12/00-07/02

Subaru GT MY98-00 SF,SF5 125kw Petrol Engine AWD Closed Off-Road Vehicle 09/98-12/00

Subaru STi MY99-00 GC,GC8 206kw Petrol Engine AWD Sedan 02/99-10/00

Subaru STi MY99-00 GFC 206kw Petrol Engine AWD Coupe 09/98-09/00

Subaru WRX MY99-00 GC,GC8 160kw Petrol Engine AWD Sedan 09/98-10/00

Subaru WRX MY99-00 GF,GF8 160kw Petrol Engine AWD Wagon 09/98-10/00

Subaru B4 (BE, BH, BT) EJ20TT MY98-03 BE, BH, BT 198kw Petrol Engine AWD Sedan 12/98-08/03

Subaru B4 (BE, BH, BT) EJ20TT MY98-03 BE,BE5 206kw Petrol Engine AWD Sedan 01/01-08/03

Subaru B4 (BE, BH, BT) EJ20TT MY98-03 BE,BE5 191kw Petrol Engine AWD Sedan 08/01-02/02

Subaru B4 (BE, BH, BT) EJ20TT MY98-03 BE, BH, BT 210kw Petrol Engine AWD Sedan 12/98-08/03

Subaru XT MY03-04 (series I) SG 130kw Petrol Engine AWD Closed Off-Road Vehicle 09/02-12/08

Subaru XT MY03-04 (series I) SG,SG9 155kw Petrol Engine AWD Closed Off-Road Vehicle 12/03-06/05