Adjustable Internal Wastegate Actuator for Mitsubishi Evo 4–8

The GFB WGA 7301 Internal Wastegate Actuator is engineered to improve boost control on Mitsubishi Lancer Evolution IV to VIII models. Factory actuators can struggle to maintain stable boost as exhaust backpressure increases, particularly on modified engines.

Improved Wastegate Control

A stronger actuator with a larger effective diaphragm area provides greater control over the wastegate flap, helping prevent premature opening and reducing boost taper.

Adjustable Preload

The threaded actuator rod allows preload to be set accurately, making it possible to fine-tune boost behaviour for stock or modified setups.

Direct Bolt-On Fitment

Designed to bolt directly in place of the factory wastegate actuator using original mounting points. No fabrication or modification required.

Tuning Required

Although this is a mechanical bolt-on component, it functions as a tuning tool. Installation will increase boost pressure, therefore ECU tuning is required.