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Go Fast Bits Basic Dump Valve Impreza 93-00 (GC8)
Basic by name but not by quality. Sporting the same unique internal features and quality found in all GFB valves, tests prove that the Basic can flow up to 40% more than other valves on the market of the same size and shape. This is actually one of the highest flowing valves in the GFB range owing to the large venting area of the 5 hole pattern. This capacity makes the basic a great choice for big horsepower and drag engines and all at an affordable price.
Please note the following adaptors are needed to suit the various models of Impreza:
1994 - 96 requires adpator 5020
1997 - 98 requires no adaptor
1999 - 00 requires adaptor 5101
Please choose colour requirement below.
Price: £105.99
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Go Fast Bits Plumback Dump Valve Impreza 93-00 (GC8)
Designed as a replacement for factory re-circ valves and for those who wish to remain a little more anonymous. The Plumback is capable of holding and flowing more boost than factory valves. This results in better throttle response and boost stability whilst remaining silent. If your factory valve is not up to the task and you dont want any noise, this is the valve for you.
Please note the following adaptors are needed to suit the various models of Impreza:
1994 - 96 requires adpator 5020 and 5220
1997 - 98 requires no adaptor
1999 - 00 requires adaptor 5101
Please choose colour requirement below.
Price: £142.99
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Go Fast Bits Bovus Maximus Dump Valve Impreza 93-00 (GC8)
Got a larger turbo system and want lots of noise?
Twin stage trumpets make this a very responsive valve with a flow capacity comparable to the Basic but with a louder discharge.
Please note the following adaptors are needed to suit the various models of Impreza:
1994 - 96 requires adpator 5020
1997 - 98 requires no adaptor
1999 - 00 requires adaptor 5101
Please choose colour requirement below.
Price: £169.99
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Go Fast Bits Hybrid Dump Valve Impreza 93-00 (GC8)
The Hybrid is the choice if you want a more subdued but audible blow-off noise or, if you suffer from backfiring with an atmospheric valve. Its two seqentially opening outlets recirculate some air back into the inlet and preventing backfiring and idle issues whilst the rest is vented to air.
Please note the following adaptors are needed to suit the various models of Impreza:
1994 - 96 requires adpator 5020 and 5220
1997 - 98 requires no adaptor
1999 - 00 requires adaptor 5101
Please choose colour requirement below.
Price: £169.99
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Go Fast Bits Stealth FX Dump Impreza 97 - 00 (GC8)
GFB's Flagship model the unique patented Stealth system allows you to adjust the bias between the trumpet and the plumb back outlet giving you complete control over how loud your shifts are. Its ratchet head can be adjusted to any one of 17 positions ranging from a silent plumb back valve through to ear shattering simply by turning the cap.
Please note the following adaptors are needed to suit the various models of Impreza:
1997 - 98 requires adaptor 5335
1999 - 00 requires adaptor 5101
Please choose colour requirement below.
Price: £279.99
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Go Fast Bits WRX Hybrid Impreza 01+ (GDB)
This valve is specifically designed for the MY01 and later Impreza WRX. It is a complete bolt on kit that requires NO modification or extras to install and can be set up in one of two venting arrangements. By leaving the factory fitted cap on the plumb back outlet you vent all of the air to atmosphere for maximum noise or you can connect the plumb back hose which gives a more subdued hybrid noise but will solve any back firing problems that can sometimes be encountered.
Please choose colour option below:
Price: £196.99
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Go Fast Bits WRX Stealth FX Dump Valve Impreza 01+ (GDB)
Following the footsteps of the popular WRX Hybrid, the WRX Stealth FX is a bolt on replacement for MY01 onwards. Everything needed is supplied in the Kit for quick and easy installation
Price: £279.99
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Go Fast Bits 5020 Adaptor
Screw in adaptor 5020 for use on GFB valves
Price: £10.63
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Go Fast Bits 5220 Adaptor
Screw in adaptor 5220 for use on GFB valves
Price: £10.63
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Go Fast Bits 5335 Adaptor
Screw in adaptor 5335 for use on GFB valves
Price: £10.63
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Forge Alloy Recirculating Dump Valve Impreza V5
Alloy Recirculating Ram Dump Valve, flange mounted available to fit the Impreza V5
Made from billet aluminium, this recirculating diverter valve dumps the charge-air back into the air intake system keeping external noise to a minimum. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably.
Unlike the Diaphragms valves this uses a single piston single spring to prevent the valve from leaking air into the intake system at idle. This prevents our diverter valves suffering any of the failures associated with single piston and diaphragm type diverter valves.
Price: £146.99
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Forge Alloy Atmospheric Dump Valve Impreza V5
Alloy Atmospheric Ram Dump Valve, flange mounted available to fit the Impreza V5
Made from billet aluminium, this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound most commonly associated with rally cars when the throttle is lifted. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably.
Unlike the Diaphragms valves this uses a single piston single spring to prevent the valve from leaking air into the intake system at idle. This prevents our diverter valves suffering any of the failures associated with single piston and diaphragm type diverter valves.
Price: £146.99
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Forge Alloy Recirculating Dump Valve Impreza V4
Alloy Recirculating Ram Dump Valve available to fit the Impreza V4
Made from billet aluminium, this recirculating diverter valve dumps the charge-air back into the air intake system keeping external noise to a minimum. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably.
Unlike the Diaphragms valves this uses a single piston single spring to prevent the valve from leaking air into the intake system at idle. This prevents our diverter valves suffering any of the failures associated with single piston and diaphragm type diverter valves.
Price: £122.99
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Forge Alloy Atmospheric Dump Valve Impreza V4
Alloy Atmospheric Ram Dump Valve available to fit the Impreza V4
Made from billet aluminium, this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound most commonly associated with rally cars when the throttle is lifted. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably.
Unlike the Diaphragms valves this uses a single piston single spring to prevent the valve from leaking air into the intake system at idle. This prevents our diverter valves suffering any of the failures associated with single piston and diaphragm type diverter valves.
Price: £122.99
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Forge Alloy Recirculating Dump Valve Impreza 2001
Alloy Recirculating Ram Dump Valve available to fit the Impreza 2001
Made from billet aluminium, this recirculating diverter valve dumps the charge-air back into the air intake system keeping external noise to a minimum. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably.
Unlike the Diaphragms valves this uses a single piston single spring to prevent the valve from leaking air into the intake system at idle. This prevents our diverter valves suffering any of the failures associated with single piston and diaphragm type diverter valves.
Price: £151.99
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Forge Alloy Atmospheric Dump Valve Impreza 2001
Alloy Atmospheric Ram Dump Valve available to fit the Impreza 2001
Made from billet aluminium, this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound most commonly associated with rally cars when the throttle is lifted. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably.
Unlike the Diaphragms valves this uses a single piston single spring to prevent the valve from leaking air into the intake system at idle. This prevents our diverter valves suffering any of the failures associated with single piston and diaphragm type diverter valves.
Price: £146.99
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Forge Alloy Replacement Dump Valve to suit Impreza MY93 - 95
Alloy Original Replacement Dump Valve available to fit the Impreza MY 93-95
Price: £125.99
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Forge Alloy Type RS Atmospheric Dump Valve
Forge Motorsport Type RS Atmospheric Dump Valve to suit all Impreza
Designed and engineered, to offer extreme flow rate capability, where other valves are just not up to it. Often when engines have been tuned by installing larger turbos or even software upgrades improved turbo response can be acheived by fitting the RS valve which has the greater internal mass air flow specification utilising an amazing 50mm (2") bore.
For fine tuning there is a variable spring preload incorporated and to ease installation a 360 degree adjustable vacuum hose connector.
Please choose vehicle type from drop down menu.
Price: £174.99
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Forge Alloy Type RS Recirculating Dump Valve
Forge Motorsport Type RS Recirculating Dump Valve to suit all Impreza
Designed and engineered, to offer extreme flow rate capability, where other valves are just not up to it. Often when engines have been tuned by installing larger turbos or even software upgrades improved turbo response can be acheived by fitting the RS valve which has the greater internal mass air flow specification utilising an amazing 50mm (2") bore.
For fine tuning there is a variable spring preload incorporated and to ease installation a 360 degree adjustable vacuum hose connector.
Please choose vehicle type from drop down menu.
Price: £174.99
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Forge Alloy Impreza MY93 - 95 Dump Valve
Forge Motorsport Alloy Atmospheric Ram Dump Valve to suit Impreza MY 93-95
Made from billet aluminium, this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound most commonly associated with rally cars when the throttle is lifted. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably.
Unlike the Diaphragms valves this uses a single piston single spring to prevent the valve from leaking air into the intake system at idle. This prevents our diverter valves suffering any of the failures associated with single piston and diaphragm type diverter valves.
Price: £125.99
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Blitz Super Sound Dump Valve
Blitz dump valves are supplied with a full fitting kit and interchangeable trumpets for different sounds. The main purpose of the dump valves is to improve the response of the turbo by quickly releasing the boost pressure before the turbo stalls.
Price: £216.99
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