The Mercedes E 63 AMG 571hp (W213 - 2016 - 2019) produces 571bhp and 750Nm in standard form. Our Stage 1 ECU tuning file raises output to 650bhp and 850Nm, a gain of 79bhp and 100Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.