This entry level GFB Blow Off Valve (BOV) that still utilises the proven TMS technology to ensure dependable boost holding and optimum throttle response.
The Mach 2 can help return the engine to peak boost up to 30% faster than a factory diverter valve when shifting gears.
The Mach 2 is configured as a 100% recirculating valve (i.e. bypass, plumb back) and is a direct factory replacement when you want the performance WITHOUT the noise!
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.
An atmosphere venting kits is available seperately to convert the recirculating valve if you want noise with your performance.
DIRECT FIT FOR THE 2001-2007 IMPREZA WRX OR STI MODELS
ALSO FITS THE 2008-2015 STI MODELS (NOT WRX MODELS)
