The Subaru Impreza 2.0T WRX 225hp (2003 - 2005) produces 225bhp and 300Nm in standard form. Our Stage 1 ECU tuning file raises output to 260bhp and 360Nm, a gain of 35bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.