The Fiat 500 X 1.6 Multijet 120hp (2015 - 2018) produces 120bhp and 320Nm in standard form. Our Stage 1 ECU tuning file raises output to 155bhp and 380Nm, a gain of 35bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.