The Holden Commodore 6.0 V8 354hp (2005 - 2008) produces 354bhp and 510Nm in standard form. Our Stage 1 ECU tuning file raises output to 375bhp and 540Nm, a gain of 21bhp and 30Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.