The Volvo S40 2.0D 136hp (2004 - 2007) produces 136bhp and 320Nm in standard form. Our Stage 1 ECU tuning file raises output to 172bhp and 400Nm, a gain of 36bhp and 80Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.