Fine-tune boost levels and maximize turbo performance with Subaru boost controllers from IAG Performance. Designed for WRX, STI, Legacy GT, and Forester XT models (2002–2023), our selection includes boost control solenoids, covers, and hardware for EJ25, FA20, and FA24 engines. Whether you're dialing in a street setup or optimizing a performance build, these components help deliver precise boost control and consistent power. Featuring trusted brands like COBB, GrimmSpeed, Perrin Performance, and TurboXS.