The Volkswagen Golf 1.4i 16v 75hp (Mk5 - 2003 - 2008) produces 75bhp and 126Nm in standard form. Our Stage 1 ECU tuning file raises output to 82bhp and 140Nm, a gain of 7bhp and 14Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.