The Mercedes E 200 K 163hp (W211 - 2002 - 2006) produces 163bhp and 240Nm in standard form. Our Stage 1 ECU tuning file raises output to 200bhp and 280Nm, a gain of 37bhp and 40Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.