The Smart City 0.8 CDI 45hp (2002 - 2004) produces 45bhp and 110Nm in standard form. Our Stage 1 ECU tuning file raises output to 65bhp and 150Nm, a gain of 20bhp and 40Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.