The Volkswagen Golf 2.0 TFSI GTI 230hp (Mk5 - 2003 - 2008) produces 230bhp and 300Nm in standard form. Our Stage 1 ECU tuning file raises output to 300bhp and 410Nm, a gain of 70bhp and 110Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.