The Mercedes E 63 AMG S 612hp (W213 - 2016 - 2019) produces 612bhp and 850Nm in standard form. Our Stage 1 ECU tuning file raises output to 690bhp and 950Nm, a gain of 78bhp and 100Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.