GFB TMS Blow Off Valves are the ultimate 'Bolt-On' BOV solution for your vehicle. Featuring everything needed to fit to your vehicle, the GFB TMS fange fits directly in the factory location (not on a separate adaptor) and no modifications to the car re required.Adjust the volume of your blow-off soundUp to 30% faster boost recovery on gearshiftGet the blow off sound without the hassles - even on sensitive MAF-based systemsHold unlimited boost pressureDirect bolt-on kits availableVehicle Applications:SUBARU WRX MY14-on (FA20 engine) GJ 197kw Petrol Engine AWD Sedan 01/14-onSUBARU XT MY14-on (FA20 engine) SJ 177kw Petrol Engine AWD Closed Off-Road Vehicle 03/13-on