The Mercedes E 350 299hp (W213 - 2016 - 2019) produces 299bhp and 400Nm in standard form. Our Stage 1 ECU tuning file raises output to 348bhp and 451Nm, a gain of 49bhp and 51Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.