The Mercedes Vito 115 CDI 150hp (W639 - 2003 - 2010) produces 150bhp and 330Nm in standard form. Our Stage 1 ECU tuning file raises output to 180bhp and 400Nm, a gain of 30bhp and 70Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.