The Smart Roadster 0.7 Turbo 82hp (2003 - 2006) produces 82bhp and 110Nm in standard form. Our Stage 1 ECU tuning file raises output to 102bhp and 135Nm, a gain of 20bhp and 25Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.