Using GFB’s TMS technology the Mach 2 can help return the engine to peak boost up to 30% faster than a factory diverter valve when shifting gears (more information below).
Like the Respons and Deceptor Pro II, the Mach 2 is available in a range of bolt-on kits for most popular turbo models. And when GFB says “bolt-on”, that’s exactly what they mean!
No additional adaptors, parts or vehicle modifications are required – simply remove the factory bypass valve and replace it with the Mach 2 – it’s that simple! The Mach 2 is configured as a 100% recirculating valve (i.e. bypass, plumb back) and add on kits are also available to convert to 100% atmosphere venting.
Use the recirc model for direct factory replacement when you want the performance WITHOUT the noise! Add the conversion kit when you want some noise with your performance! Factory bypass valves have two main shortcomings – one is that they are typically designed to start opening above a certain pressure to protect the engine, and the other is they are not optimised for throttle response. Oh, and you can’t vent them to atmosphere without stalling your engine.
The Mach 2 solves all of these issues. It can effectively hold unlimited boost (unlimited in that no turbo could ever produce enough pressure to damage it), and the TMS technology ensures maximum throttle response. Oh, and you CAN vent with the atmo conversion to atmosphere without stalling your engine…
To Suit:
Subaru Forester GT SF EJ20T 98-02
Subaru Impreza GT GC/GF EJ20T 98-00
Subaru Impreza STi EJ20T GC8-GF8 99-00
Subaru Impreza WRX EJ20T GC8-GF8 99-00
Subaru Legacy BE-BH EJ20T 98-03
Subaru Forester XT SG Series 1 EJ20T/EJ25T 02-08
Can be configured to a 100% Vented BOV using Kit # 5930
To Suit:
Subaru Forester XT SH EJ25T 08-on
Subaru Impreza WRX GE-GH EJ25T 08-11
Subaru Legacy BL-BP EJ20T 03-06
Subaru Liberty BL-BP EJ25T 06-09
Subaru Liberty BL-BP EJ20T 03-06
Can be configured to a 100% Vented BOV using Kit # 5930
To Suit:
Mazda 3 MPS BK MZR L3-VDT inc Mazdaspeed 06-09
Mazda 3 MPS BL MZR L3-VDT inc Mazdaspeed 09-13
Mazda 6 MPS GG MZR L3-VDT inc Mazdaspeed 05-on
Mazda CX7 All ER L3-VDT 06-on
Mitsubishi Eclipse 1G 4G63T D2_A 90-94
Mitsubishi Galant VR4 E38A-E39A 4G63T HH/HG 89-93
Nissan Skyline R31 RB20DET 85-90
Nissan Skyline R32 RB20DET 89-93
Nissan Skyline R33 RB20DET 93-98
Nissan Skyline R33 RB25DET 93-98
Nissan Skyline R34 RB25DET 98-06
Can be configured to a 100% Vented BOV using Kit # 5930
To Suit:
Subaru Impreza STi GDB-GGB EJ20T 02-07
Subaru Impreza STi GDB-GGB EJ25T 02-07
Subaru Impreza STi GR EJ25T 08-11
Subaru Impreza STi EJ25T 14-on
Subaru Impreza WRX GDA-GGA EJ20T 00-07
Subaru Impreza WRX GDA-GGA EJ25T 06-07
Subaru Forester XT SG Series 2 EJ25T 05-08
Can be configured to a 100% Vented BOV using Kit # 5933
To Suit:
Nissan 200SX S14-S15 SR20DET 94-03
Nissan Silvia S14 SR20DET 93-99
Nissan Silvia S15 SR20DET 00-03
Can be configured to a 100% Vented BOV using Kit # 5930
To Suit
Nissan Skyline R35 GT-R VR38DETT 09-on
Can be configured to a 100% Vented BOV using Kit # 5930 x 2
To Suit:
Subaru Impreza WRX FA20DIT 14-on
Subaru Forester XT SJ FA20T 13-on
Can be configured to a 100% Vented BOV using Kit # 5925
To suit:
KIA Stinger 2.0T-GDI 2017-on
HYUNDAI I30 N 2.0T-GDI (2017-on)
HYUNDAI Kona N 2.0 T-GDI (2021-on)
HYUNDAI I30 N 2.0T-GDI (2017-on)
HYUNDAI I30 N sedan/Elantra N 2.0T-GDI (2021-on)
To Suit:
Ford Laser KC-KE B6T 87-90
Ford Laser KF-KH BPT 90-93
Mazda MX-5 NB BP-4W inc Mazdaspeed 04-05
Subaru Impreza GT GC-GF EJ20T 94-98
Subaru Impreza WRX GC8-GF8 EJ20T 94-96
Subaru Impreza STi GC8B-GC8C 93-96
Toyota Supra JZA80 2JZ-GTE 93-02
Can be configured to a 100% Vented BOV using Kit # 5920
To Suit:
Dodge Stealth Z1_A 92-00
Mitsubishi 3000GT VR-4 Z16A 6G72TT 92-99
Mitsubishi Colt Ralliart 4G15T RG 06-on
Mitsubishi Eclipse 2G D3_A 95-99
Mitsubishi Galant VR-4 E84A 6A12TT HJ 92-96
Mitsubishi GTO 6G72TT Z1_A 89-00
Mitsubishi Lancer EVO I-III CD9A-CE9A 4G63T 92-96
Mitsubishi Lancer EVO IV-IX CN9A-CT9A 4G63T 96-07
Mitsubishi Lancer EVO X inc Ralliart CZ4A 4B11T 07-on
Mitsubishi Lancer GSR CD9A 4G93T 92-96
Mitsubishi Legnum VR-4 EC5A-EC5W 6A13TT 96-02
This is sold as a 100% Atmospheric Venting Blow off Valve but we can change this to a 100% Recirculating Diverter Valve if preferred.
To Suit:
Nissan 180SX S13 CA18DET 89-94
Nissan Silvia S13 CA18DET 89-94
Nissan Silvia S13 SR20DET 89-94
Nissan 300ZX Z32 VG30DETT 89-97
Mazda 626 GC FET 86-87
Mazda 626 GD F2 87-91
Mazda MX6 GD F2 87-91
Toyota Celica GT-Four ST165 3S-GTE 86-89
Toyota Celica GT-Four ST185 3S-GTE 90-93
Toyota Celica GT-Four ST205 3S-GTE 94-99
Holden Commodore VL RB30ET 86-88
Subaru Impreza WRX GC8-GF8 EJ20T 96-97
Subaru Impreza STi GC8 EJ20T 94-97
Skoda Octavia MK1 1U 96-06
Mitsubishi Cordia AA-AC 4G62T 83-89
Mitsubishi Starion JA-JD 4G63T 82-88
This particular valve is sold as a 100% Atmospheric Venting Blow Off Valve with a Trumpet but we can change this to a 100% Recirculating Diverter Valve if preferred.