The Vauxhall GT 2.0 Turbo 264hp (2007 - 2009) produces 264bhp and 350Nm in standard form. Our Stage 1 ECU tuning file raises output to 295bhp and 430Nm, a gain of 31bhp and 80Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.