The Mercedes ML 350 CDI 211hp (W164 - 2009 - 2011) produces 211bhp and 540Nm in standard form. Our Stage 1 ECU tuning file raises output to 275bhp and 600Nm, a gain of 64bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.