Wastegate Actuator for 2004-2021 STI

Go Fast Bits Wastegate Actuator (Tune Required), made to fit the 2004-2021 Subaru STI. Massive Performance, Compact Size.• Industry-first diaphragm design - the WGA's Silicone/Nomex diaphragm uses a new bead retention design that achieves the largest effective area with the smallest possible outside diameter.

Performance Gains

This keeps the overall size of the WGA down whilst giving it more control authority over the wastegate flap, resulting in better boost control.

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Features & Specs

• Whilst other brands may offer more spring options (sold separately), changing springs to fine-tune boost pressure is time consuming and quite frankly, a pain.
• The long stroke of the WGA means more adjustment range for the spring pre-load, so you can fine-tune your base boost pressure in a matter of minutes without swapping springs or removing the actuator.
• Brand: Go Fast Bits
• Part number: GFB7305

Straight from SubiSpeed

Wastegate changes affect boost control, so plan on a tune after install. Make sure the actuator spring suits your target boost.