The Smart ForFour 1.5 Turbo 177hp (2004 - 2014) produces 177bhp and 230Nm in standard form. Our Stage 1 ECU tuning file raises output to 180bhp and 270Nm, a gain of 3bhp and 40Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.