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GFB Mach 2 TMS Recirculating Diverter Valve Direct Fitment Subaru 08-12

$204.55 Sale:$184.10

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Model #T9101

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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.


  • 2009 Subaru Forester XT H4.2458cc
  • 2009-2010 Subaru Forester XT Limited H4.2458cc
  • 2010-2013 Subaru Forester XT Premium H4.2458cc
  • 2011-2013 Subaru Forester XT Touring H4.2458cc
  • 2009-2010 Subaru Impreza 2.5 GT H4.2458cc
  • 2008-2014 Subaru Impreza WRX H4.2458cc
  • 2010-2014 Subaru Impreza WRX Limited H4.2458cc
  • 2009-2014 Subaru Impreza WRX Premium H4.2458cc
  • 2006-2009 Subaru Legacy 2.5i H4.2458cc
  • 2007-2009 Subaru Legacy 2.5i Limited H4.2458cc
  • 2007-2009 Subaru Legacy 2.5i Special Edition H4.2458cc
  • 2009 Subaru Legacy 3.0 R H6.3000cc
  • 2008-2009 Subaru Legacy 3.0 R Limited H6.3000cc
  • 2003-2006 Subaru Legacy GT H4.2458cc
  • 2005 Subaru Legacy GT Limited H4.2458cc
  • 2007-2009 Subaru Legacy GT Limited H4.2458cc
  • 2006-2009 Subaru Legacy GT spec.B H4.2458cc
  • 2005 Subaru Legacy i H4.2458cc
  • 2003-2004 Subaru Legacy L H4.2458cc
  • 2004 Subaru Legacy L 35th Anniversary H4.2458cc
  • 2003 Subaru Legacy L SE H4.2458cc
  • 2005 Subaru Legacy Limited H4.2458cc

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Go Fast Bits #gfbT9101

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Vehicle Engine Notes
Subaru Forester XT

Subaru Legacy

Lifetime Warranty
We live in a throw-away society, conditioned by cheap products and frequently released new models to expect eventual failure and discard something when it stops working or is superseded. However, pride in workmanship and our commitment to quality means that when we put our name to something, we are also staking our reputation on it.

That’s why we back our products with the best Warranty in the business! You should expect a lifetime of use from a well-engineered product, so if your GFB product fails as a result of defective materials or faulty workmanship whilst you remain the original owner, we will repair or replace it.

If the fault occurred as a result of usage outside of the terms of the warranty, or you are not the original owner, fear not, we can still help you. You should never need to throw a GFB product away, as spare parts are available and won’t cost the earth.

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