The Mercedes E 250 - 211hp (W213 - 2016 - 2019) produces 211bhp and 350Nm in standard form. Our Stage 1 ECU tuning file raises output to 230bhp and 400Nm, a gain of 19bhp and 50Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.