GFB Mach 2 Blow Off Valve
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GFB Mach 2 Recirculating Plumb Back BOV Blow Off Valve
GFB has built a solid reputation on TMS technology, and the Mach 2 is a straightforward way to get a genuine boost response upgrade without fuss. Designed as a direct bolt-on replacement, it suits the Subaru WRX, Liberty GT and Forester XT without any extra adaptors or vehicle modifications required.
This listing covers the 2008-2014 WRX, 2004-2009 Liberty GT and 2008-2013 Forester XT. It's configured as a 100% recirculating (plumb back) valve for factory-style performance without added noise, keeping things quiet and OEM-like under the bonnet.
Note: This is the recirculating version. If you want atmosphere venting sound, you'll need GFB's separate Atmosphere Conversion Kit or a hose plug and trumpet outlet, sold separately.
Key Features
- Uses GFB's TMS technology for faster boost recovery between gear shifts
- Holds boost pressure well beyond what any factory turbo can produce
- 100% recirculating design for quiet, OEM-style operation
- Direct bolt-on replacement for the factory bypass valve
- No additional adaptors or vehicle modifications required
- Upgradeable to atmosphere venting via optional conversion kit
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please ensure your vehicle's year, trim level, and configuration are confirmed before ordering.
Not sure if this suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
| Make | Model | Chassis | Engine |
|---|---|---|---|
| Subaru | Forester XT | SH | EJ255 |
| Subaru | Liberty GT | BL | EJ208 |
| Subaru | Liberty GT | BP | EJ208 |
| Subaru | WRX | GH | EJ255 |
| Subaru | WRX | GR | EJ255 |
Technical Specifications
| Spec | Value |
|---|---|
| Valve Type | 100% recirculating (bypass / plumb back) |
| Technology | TMS (Turbo Management System) |
| Boost Recovery Performance | Up to 30% faster return to peak boost than factory diverter valve on gear shifts |
| Boost Holding Capacity | Effectively unlimited (not boost pressure limited) |
| Conversion Option | Can be converted to atmosphere venting via optional hose plug or Atmosphere Conversion Kit (sold separately) |
| Installation Type | Direct bolt-on replacement for factory bypass valve — no additional adaptors or vehicle modification required |
No instructions available for this product.
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