The Mercedes S 320 (3.0T) 272hp (W222 - 2013 - 2017) produces 272bhp and 400Nm in standard form. Our Stage 1 ECU tuning file raises output to 400bhp and 580Nm, a gain of 128bhp and 180Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.