The Subaru Impreza 2.5T WRX 230hp (2008 ->) produces 230bhp and 320Nm in standard form. Our Stage 1 ECU tuning file raises output to 260bhp and 380Nm, a gain of 30bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.