The Fiat 500 X 2.0 Multijet 150hp (2019 ->) produces 150bhp and 350Nm in standard form. Our Stage 1 ECU tuning file raises output to 185bhp and 400Nm, a gain of 35bhp and 50Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.