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GFB Mach 2 TMS Blow off Valve T9135 Suitable for Nissan 180SX, 300ZX, GTiR / Subaru WRX, STI / Toyota Celica

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    GFB Mach2 T9135 TMS Diverter Valve/Blow Off Valve (Can be configured to a 100% Vented BOV)

    This is sold as a universal standard venting BOV to mount on intercooler piping with either a 1″ (25mm) OD flange or can be clamped on with a 1.40″ (35mm) ID silicone hose

    To Suit:

    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

    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

    GFB MACH 2 Diverter Valve / BOV

    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).

    Recirculation model for direct factory replacement for performance without the noise

    Atmosphere venting kits to convert the recirculating valve if you want noise with your performance

    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 we say “bolt-on”, that’s exactly what we 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…

    Most Credit Cards accepted. We also welcome Internet banking. (Details Provided at checkout)

    Please provide your vehicle details at checkout so we can ensure you receive the right products.

    We welcome Internet banking. (Details provided at checkout)
    Many Payment and Finance options including Paypal, Afterpay, QMastercard (with interest-free for 6 or 12 months) and more, please see our “Payments& Finance” page for details.

  • **FREE FREIGHT NZ WIDE** RD Fee May Apply

    When purchasing any parts please include in the notes your vehicle details including make, model, year, and/or registration number (And any other details you may think are important). To ensure we get the right part to you.
    Please don't hesitate to contact us, so we ensure you get the right mags & tyres to suit both your vehicle and budget!

    All new mags & tyres are to full national standard, quality and load/speed ratings and come with full manufacturer replacement warranty.See our policies pages for more information!


    Most credit cards accepted, we also welcome internet banking

    **Signature Required Delivery**
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