The Holden Commodore 3.6 V6 235hp (2005 - 2008) produces 235bhp and 325Nm in standard form. Our Stage 1 ECU tuning file raises output to 255bhp and 345Nm, a gain of 20bhp and 20Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.