FA20 Billet TGV Deletes | Roo Racing

Unrestricted airflow. Built for boost.

The factory TGV (Tumble Generator Valve) system in FA20 engines is restrictive by design. It uses butterfly valves in the intake path that become a bottleneck once you start pushing airflow especially when you turn up the boost.

Roo Racing FA20 Billet TGV Deletes replace the entire TGV assembly with smooth, CNC-machined billet aluminium blocks, removing the internal valves completely and creating a straight, unrestricted path into the cylinders.

The result is improved airflow, better charge delivery, and a cleaner intake path under all conditions.

Why upgrade the TGVs?

• Removes a major airflow restriction

• Improves horsepower and torque potential when tuned

• Essential for aftermarket turbochargers

• Reduces carbon buildup inside the intake

• More consistent airflow at higher boost levels

Construction

• CNC machined from billet aluminium

• Precision fit for FA20 intake manifolds

• Designed for strength, heat resistance, and long-term reliability

Fitment

• Subaru FA20 turbo engines

• WRX VA / Levorg VM

• Forester SJ XT

• Liberty BM/BR

Important Notes

• ECU tune required after installation

• Will trigger a check engine light without proper tuning

• Intended for performance builds and modified vehicles

Roo Racing Tip
If you’re already upgrading your turbo, intake, or chasing reliable power, TGV deletes are one of those “do it once” mods that remove a known bottleneck and future-proof your setup.

While you're there
Add new genuine gaskets and bolts to fit your new TGV Deletes

📦 Designed for performance. Built by Roo Racing. Ready to ship.