All 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 GFB’s proven TMS Technology to ensure rapid boost recovery on gearshift and optimum throttle response, as well as the ability to withstand boost pressures of 100psi+. Put simply, it can hold more boost than any turbo could produce. How GFB’s patented venting bias adjustment works Twisting the adjusting ring opens up the atmo port, whilst the recirc port is simultaneously closed.This results in possible venting ratios ranging from 100% recirc, right through to 100% atmosphere and anywhere in between. Complete Range of Fitment Options The Respons direct fit bolt-on range covers a huge list of popular vehicles. You can also purchase a variety of hose and flange adaptors for custom fitments. Performance AND sound without compromise! Patented Venting Bias Adjustment system - can be infinitely adjusted between full recirc (silent) and full atmosphere (loud) Change the venting bias simply by twisting the adjustment ring TMS Technology for up to 30% faster boost recovery on gearshift Huge range of direct bolt-on kits 100psi+ boost holding ability Manufactured in Australia in accordance with ISO 9001 Related Videos: ONLY COMPATIBLE WITH: Make Model Mark Variant EngineCodes BodyStyle DriveType FuelType YearFrom YearTo Subaru Forester SF 2.0 S Turbo EJ20 SUV All-wheel Drive Petrol 1998 2001 Subaru Forester SF 2.0 S Turbo EJ205 SUV All-wheel Drive Petrol 2001 2002 Subaru Forester SG 2.0 S Turbo EJ20 SUV All-wheel Drive Petrol 2002 2005 Subaru Forester SG 2.5 EJ25 SUV All-wheel Drive Petrol 2003 2008 Subaru Impreza GC 2.0 AWD EJ205P Saloon All-wheel Drive Petrol 1998 2000 Subaru Impreza GC 2.0 Turbo GT 4WD EJ205 Saloon All-wheel Drive Petrol 1998 2000 Subaru Impreza GF 2.0 Turbo GT 4WD EJ205 Estate All-wheel Drive Petrol 1998 2000 Subaru Impreza GFC 2.0 AWD EJ205P Coupé All-wheel Drive Petrol 1998 2000 Subaru Liberty MK III 2.0 AWD EJ205P Saloon All-wheel Drive Petrol 2002 2003 Subaru Liberty MK III 2.0 RSK AWD EJ206 Saloon All-wheel Drive Petrol 2000 2003