The Volvo S80 2.5T 231hp (2006 - 2011) produces 231bhp and 340Nm in standard form. Our Stage 1 ECU tuning file raises output to 260bhp and 385Nm, a gain of 29bhp and 45Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.