Subaru Impreza WRX/STI GC8 1998-2000 Go Fast Bits (GFB) Mach 2 TMS Recirculating Blow Off Valve Dump Valve
- Brands Go Fast Bits
- Product Code: GFB T9100
- Availability: In Stock at Manufacturer
- £163.80
-
£147.42
- Ex Tax: £122.85
Finance available on all orders above £300.
Go Fast Bits (GFB) Mach 2 TMS Recirculating
Blow Off Valve Dump Valve for Subaru Impreza WRX/STI GC8 1998-2000 T9100
Confirmed Applications
SUBARU WRX MY99-00
SUBARU Impreza 2.0 Turbo GT EJ205 MY98-00
SUBARU STi MY99-00
SUBARU GT MY98-00
SUBARU GT MY01-02
SUBARU B4 (BE, BH, BT) EJ20TT MY98-03
SUBARU XT MY03-04 (series I)
T9100 Mach 2 TMS Recirculating Diverter Valve
Direct Fitment
Part No: T9100
MACH 2: 100% Recirculating Diverter Valve
THE SIMPLE & ESSENTIAL MOD FOR QUICKER BOOST RESPONSE
Utilising Proven TMS Technology to Ensure Dependable Boost
Holding & Optimum Throttle Response
Blow off sound not to your taste? Want something as
“sleeper” as possible? Don’t want your partner to know you’ve stuck a turbo on
the daily (again)? Then the GFB Mach 2 is the valve for you!
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).
The Mach 2 is available in a range of universal and 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) as a direct factory replacement, for when you want
all the performance WITHOUT the noise!
Why replace the factory bypass valve? Better performance!
Factory bypass valves typically have two main shortcomings – one is that they
are often designed to blow open above a certain pressure to protect the engine
(if you drive an EVO, take note and read this article!), and the other is they
are not optimised for throttle response.
The Mach 2 solves both issues. With its pressure-balanced
design, the Mach 2 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.
VIP Motorsport is an official Dealer
of Go Fast Bits (GFB) in the UK. Contact us for a lead time.

