The Smart City 1.0 Turbo 84hp (2002 - 2004) produces 84bhp and 120Nm in standard form. Our Stage 1 ECU tuning file raises output to 110bhp and 160Nm, a gain of 26bhp and 40Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.