KORSH TGV Deletes Subaru WRX (GD/GG) / STI (GD/GR/GV/VA) / Forester XT (SG)

KORSH Billet TGV Delete Kit – Subaru EJ-Series

The KORSH Precision-Engineered TGV Delete Plates are a vital performance upgrade for Subaru enthusiasts looking to eliminate the restrictive factory Tumble Generator Valves. By removing the bulky TGV butterflies and divider rods from the intake path, these plates provide a significant increase in intake manifold volume and flow efficiency, allowing your engine to breathe without obstruction.

CNC-machined from high-grade billet aluminium, these plates are designed to survive the high-heat environment of the engine bay while providing a perfect, leak-free seal. This kit is an essential foundation for any build running an upgraded turbocharger or aggressive tuning, as it removes common failure points and supports maximum power output across the rev range. To ensure a professional-grade seal, this kit includes premium Radium TGV gaskets and all necessary mounting hardware.

Key Features

• Maximum Airflow Efficiency: Eliminates the restrictive TGV butterfly valves and rods, creating a clear, high-velocity path for intake air.
• CNC-Machined Billet Aluminium: Precision-crafted for a perfect fit and superior durability compared to factory cast housings.
• Improved Throttle Response: By reducing intake turbulence and restriction, engine responsiveness and mid-range torque are notably enhanced.
• Radium Gaskets Included: Supplied with high-quality Radium Engineering gaskets to ensure a reliable, high-pressure seal between the manifold and the head.
• Reliability Focused: Removes the electric TGV motors and sensors, eliminating potential mechanical failure points common in older EJ-series vehicles.
• Complete Installation Kit: Includes all necessary hardware for a straightforward bolt-on replacement of the factory TGV assemblies.

Specifications

• Material: CNC-Machined Billet Aluminium
• Finish: Raw Billet / Anodised
• Gaskets: Premium Radium TGV Gaskets Included
• Hardware: High-tensile mounting bolts included
• Application: EJ20 / EJ25 Turbo Engines

What’s Included

• 2 x KORSH Billet TGV Delete Plates (Left & Right)
• 8 x Radium Engineering TGV Gaskets
• Complete Mounting Hardware Kit

Note: Professional installation and ECU recalibration (tuning) are highly recommended. Removing the factory TGV motors will trigger a Check Engine Light (CEL) which must be disabled via a custom tune.