WRXLink (3-4) - WRX4X

This plug-in Link ECU is built for Subaru WRX & STI V3-4 and gives you modern engine management without turning the car into a full rewire project. It is a solid step up when you want better control, cleaner drivability, and real tuning flexibility.

Applications: Subaru WRX & STI V3-4. A good buy when you want plug-in convenience with enough headroom to support a serious build.