The Mercedes AMG GT 53 AMG 3.0 435hp (2018 ->) produces 435bhp and 520Nm in standard form. Our Stage 1 ECU tuning file raises output to 480bhp and 680Nm, a gain of 45bhp and 160Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.