The Mercedes S 65 AMG V12 Turbo 630hp (W222 - 2013 - 2017) produces 630bhp and 1000Nm in standard form. Our Stage 1 ECU tuning file raises output to 670bhp and 1300Nm, a gain of 40bhp and 300Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.