GFB 2008+ Mitsubishi Lancer Ralliart (4B11T) WGA Wastegate Actuator (Tune Required)

If you're looking to get more out of your Lancer Ralliart's turbo, this wastegate actuator from Go Fast Bits is a solid upgrade. It replaces the stock unit and is designed to give your turbo more precise control over boost pressure, leading to quicker spool-up and a more stable boost curve, especially at higher RPMs. Keep in mind that this part requires a tune to work correctly with your vehicle's computer.

GFB has packed a lot of smart design into this compact actuator. It uses an industry-first diaphragm design with a bead retention system, which allows for a larger effective area in a smaller package. This means it has more authority over the wastegate flap, giving you better boost control. The actuator also offers a long stroke of 18mm, which is great for controlling larger internal wastegates or for dialing in higher boost pressures without needing to swap springs. Plus, the pivoting rod guide is made from PEEK, a high-performance polymer that reduces friction and wear while keeping the overall height down.

What really sets this actuator apart is its adjustability. It comes with three stainless steel springs that can be combined to achieve boost pressures anywhere from 5 to 22 psi. But instead of having to swap springs to fine-tune the pressure, GFB included a turnbuckle adjustment. This allows you to easily adjust the spring pre-load in minutes without removing the actuator, making it much simpler to dial in your desired base boost pressure.