The Mercedes S 500 V8 Turbo 456hp (W222 - 2013 - 2017) produces 456bhp and 700Nm in standard form. Our Stage 1 ECU tuning file raises output to 500bhp and 850Nm, a gain of 44bhp and 150Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.