Radium Single/Dual Injector TGV Delete Housings Uncoated – Subaru WRX/STI/FXT/LGT

02-14 Subaru Impreza WRX
07-19 Subaru Impreza STi
06-13 Subaru Forester XT
07-12 Subaru Legacy GT
07-12 Subaru Outback XT 
05-06 Saab 9-2X Aero

The OEM tumble generator valves on the Subaru EJ engines can be a major restriction in intake air flow. Radium Engineering TGV housings feature a smooth bore for restricion-free air flow. These TGV housings also permit the use of secondary injectors on engines needing maximum fuel.

The Radium Engineering TGV housings were designed in-house and utilize die-cast manufacturing to achieve shapes and features not possible with other manufacturing methods.
The inner bores are perfectly smooth with no machining marks.  Even with the extra features, they are 56% lighter than OEM TGVs and 14% lighter than CNC billet variations. The outer mounting bosses on the TGV housing have been redesigned to provide additional clearance for larger turbo inlet pipes. Dual injector (per runner) capability make these a good match for high power engines running on alternative fuels. However, these can also be used in single injector configuration as standard TGV deletes. The swapable threaded block makes these TGV housings compatible with a wide variety of Subaru EJ intake manifolds.

NOTE: Because the TGV potentiometers and DC motors are removed, ECU tuning is required. As shown above, all OEM and aftermarket replacement (top feed) fuel rails are compatible, including Radium fuel rails 20-0467-02 or 20-0479-02 which can be found by CLICKING HERE.
These TGV housings are compatible with OEM top feed Subaru fuel injectors, or with any aftermarket injectors that have the same fitment as OEM.

If additional fuel injectors (8 total) are required, the preinstalled 2AN ORB plugs can simply be unscrewed from the upper injector ports and Radium 20-0499 DPI Fuel Rail can be used, as shown below. More information on Dual Port Injection HERE.
Fuel rails that convert from side feed to top feed injectors are NOT compatible with these TGV housings.

Contents of the kit are shown in the photos below. Fuel rails are sold separately.

-Aluminum TGV Housings (x2)
-Aluminum Eccentric Manifold Blocks (x2)
-Dual Port Injection 2AN ORB Plugs (x4)
-TGV to Cylinder Head Gaskets (x2)
-Stainless Steel Hardware (x4)
-Flanged JIS Hex Head Bolts (x4)