The Mercedes GLE 63 AMG 558hp (2015 - 2018) produces 558bhp and 700Nm in standard form. Our Stage 1 ECU tuning file raises output to 660bhp and 1050Nm, a gain of 102bhp and 350Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.