The Volvo S40 2.4 D5 163hp (2004 - 2007) produces 163bhp and 350Nm in standard form. Our Stage 1 ECU tuning file raises output to 205bhp and 450Nm, a gain of 42bhp and 100Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.