GFB Go Fast Bits 7302 WGA Internal WasteGate Actuator Bolt-On Kit for Evo 9

The GFB Mitsubishi EVO 9 Internal Wastegate Actuator by Go Fast Bits is a high-performance boost control component designed for Mitsubishi Lancer Evolution 9 models. Featuring an industry-first Silicone/Nomex diaphragm with a bead retention design, it offers the largest effective area in the smallest size, enhancing control authority over the wastegate flap for improved boost regulation. Its compact construction includes an 18mm stroke for controlling large internal wastegates or increasing boost pressure without spring changes. The unique pivoting rod guide, machined from PEEK, reduces height and friction while providing superior wear resistance. The actuator’s design emphasizes minimal bulk, making it the shortest on the market, and it offers industry-leading adjustability with turnbuckle pre-load adjustment and three stainless steel springs (ranging from 5psi to 22psi) for precise boost tuning.

This internal wastegate actuator is compatible with Mitsubishi Evolution 9 models, typically fitted to vehicles with the 4G63 engine. It is intended for performance applications, including street and track use, where precise boost control is critical. The product is a direct replacement or upgrade for the factory component, with installation options available in bolt-on or universal kits. The design allows for quick, tool-free fine-tuning of boost pressure without spring swaps, making it suitable for enthusiasts seeking reliable, adjustable boost management in high-performance setups.