The Holden Commodore 6.0 V8 Clubsport 412hp (2005 - 2008) produces 412bhp and 550Nm in standard form. Our Stage 1 ECU tuning file raises output to 435bhp and 575Nm, a gain of 23bhp and 25Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.