The BMW M4 3.0 - 431hp (F82 - 2014 ->) produces 431bhp and 550Nm in standard form. Our Stage 1 ECU tuning file raises output to 500bhp and 680Nm, a gain of 69bhp and 130Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.