The Vauxhall Insignia 2.8 OPC V6 Turbo 325hp (2008 - 2013) produces 325bhp and 435Nm in standard form. Our Stage 1 ECU tuning file raises output to 360bhp and 550Nm, a gain of 35bhp and 115Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.