3 Port Electronic Boost Control Solenoid

The GrimmSpeed 3 Port Electronic Boost Control Solenoid is engineered as a direct replacement for the factory unit on the FA20DIT platform, addressing issues such as inconsistent boost, boost creep, and failure to hold target pressure. This solenoid restores proper boost control accuracy. Its 3-port design matches OEM connections, and it offers a true plug-and-play installation by connecting directly to factory wiring and vacuum lines without requiring modifications or retuning. This boost control solenoid is specifically designed for the 2015-2021 Subaru WRX models with the FA20DIT engine, and the 2014-2018 Subaru Forester XT models with the FA20F engine. The GrimmSpeed solenoid utilizes a machined adapter with standard NPT threads, allowing for interchangeable use with barbed or AN fittings, and is compatible with both aftermarket turbo inlets (including GrimmSpeed's own aluminum inlet) and the factory composite inlet. It is recommended to consult with a tuner immediately after installation, as modifying boost control affects vehicle tuning, and driving without proper tuning is not advised. GrimmSpeed, based in Portland, Oregon, has been manufacturing performance parts for Subaru since 2003. This boost control solenoid has been extensively tested and trusted by tuners and drivers worldwide, with millions of miles of real-world data supporting its reliability and performance. Installation is described as straightforward, though some users note that removing and reinstalling splash guards and skid plates can be cumbersome. The product includes the GrimmSpeed boost solenoid and associated fittings, ready for installation.