The Holden Commodore 3.6 V6 280hp (2013 ->) produces 280bhp and 350Nm in standard form. Our Stage 1 ECU tuning file raises output to 301bhp and 376Nm, a gain of 21bhp and 26Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.