Process West Raw Silver Billet Tumbler Generator Valve (TGV) Delete Kit 2001-2007 & 08+STI
£539.99
Process West billet TGV (Tumbler Generator Valve) delete kit for a range of Subaru Forester, Impreza/WRX/STI, Legacy/Outback models, finished in raw silver. Removes the restrictive standard butterfly-valve assembly; machined for ported heads and compatible with 11mm or 13mm injectors and aftermarket fuel rails.
SKU: PWTD04
EKS Fitment Advice
EKS currently identifies this product as Needs Confirmation
Compatibility of any product, greatly depends on model + year + trim + mods. Most Subaru’s are in different states of tune, so please contact Rich, from EKS to get clarity before purchasing.
Potential Applications
Subaru Impreza 2001-2002 (GD/GG Bugeye), Subaru Impreza 2003-2005 (GD/GG Blobeye), Subaru Impreza 2006-2007 (GD/GG Hawkeye), Subaru Forester 1996-2002 (SF), Subaru Forester 2003-2005 (SG early), Subaru Forester 2006-2007 (SG facelift), Subaru Legacy 1992-2003, Subaru Legacy 2003-2009 (BL/BP)
Full List of EKS Fitment Evidence Types
For context, here are all categories of fitment according to EKS.
- Direct Fitment: means the product is currently listed as fitting the model/generation shown.
- Shared / Application Fitment: means the product may suit shared Subaru platforms, engines, turbos, drivetrains, brakes, cooling/intake setups or modified applications.
- Universal / Service Item: means the product is broadly useful for Subaru servicing, maintenance, workshop use or general ownership.
- Needs Confirmation: means the product appears relevant, but final fitment may depend on extra details.
Product Description
Tumbler Generator Valves (TGVs) are fitted to Impreza WRX, Forester Turbo and Legacy GT models from 2001 onward, primarily to reduce cold-idle emissions. The standard TGV uses twin butterfly valves in each tumbler housing which restrict airflow even when fully open, and the associated sensors and motors are a common failure point.
This Process West billet TGV delete kit removes the standard valve assembly. The port profile is machined to suit ported heads, and the upper flange is O-ringed to seal against a stock or aftermarket plenum. Fuel injector ports are machined to accept either 11mm or 13mm diameter injectors without adaptors, using the supplied Viton O-rings, and the fuel rail mounting points match the stock location, allowing use with aftermarket fuel rails.
Finished in raw silver. Fitment: a range of Subaru Forester, Impreza/WRX/STI, Legacy/Outback models.