The Infiniti Q50 S 3.0T 405hp (2017 ->) produces 405bhp and 475Nm in standard form. Our Stage 1 ECU tuning file raises output to 440bhp and 620Nm, a gain of 35bhp and 145Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.