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Maxfab Fabrication & Supply Co.

Diverter / Blow Off Valve - MACH2

Diverter / Blow Off Valve - MACH2

Regular price $319.00 NZD
Regular price Sale price $319.00 NZD
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GFB Mach2 Diverter Valve / Blow Off Valve - Recirculating or Vented Available 

The simple and essential MOD for 30% quicker boost. Utilizing proved TMS technology to ensure dependable boost holding and optimum throttle response

Using GFB's TMS technology the Mach2 can help return the engine to peak boost up to 30% faster than a factory diverter valve when shifting gears. The Mach2 is available in a range of bolt-on kits for most popular turbo models. No additional adaptors, parts or vehicle modifications are required - simply remove the factory bypass valve and replace it with the Mach2 - its that simple!

The Mach2 is configured as a 100% recirculating valve (i.e. bypass, plumb back) and add on kits are also available to purchase and 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 

Please refer to chart below for the correct model to suit your vehicle 


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)



Subaru Forester XT SH EJ25T (08-ON)

Subaru Impreza STi GR EJ25T (08-11)

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)



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)

Mazda 3 MPS BK MZR L3-VDT (06-09)

Mazda 3 MPS BL MZR L3-VDT (09-13)

Mazda 3 MPS GG MZR L3-VDT (05-ON)



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)



Nissan 200SX S14-S15 SR20DET (94-03)

Nissan Silvia S14 SR20DET (93-99)

Nissan Silvia S15 SR20DET (00-03)


Subaru Impreza WRX FA20DIT (14-ON)

Subaru Forester XT SJ FA20T (13-ON)


25mm Hose - universal for intercooler piping or silicone tee with 25mm port 

Comes 100% vented and includes trumpet



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)

Dodge Stealth Z1_A (92-00)

Mitsubishi 3000GT VR-4 Z16A 6G72TT (92-99)

Mitsubishi Colt Ralliart 4G15T RG (06-ON)

Mitsubishi GTO 6G72TT Z1_A (89-00)

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