The Fiat 500 X 1.3 Firefly Turbo 150hp (2019 ->) produces 150bhp and 270Nm in standard form. Our Stage 1 ECU tuning file raises output to 170bhp and 310Nm, 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.