The Alfa Romeo Stelvio 2.2 JTD 150hp (2017 ->) produces 150bhp and 380Nm in standard form. Our Stage 1 ECU tuning file raises output to 220bhp and 530Nm, a gain of 70bhp and 150Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.