The BMW M4 3.0 CS 460hp (F82 - 2014 ->) produces 460bhp and 600Nm in standard form. Our Stage 1 ECU tuning file raises output to 500bhp and 680Nm, a gain of 40bhp and 80Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.