Chery Gasoline MED 17.X.X (CAT EVAP EGR DTC OFF). ECU firmware/calibration dump for professional tuning of a Chery gasoline vehicle with MED 17.X.X. The listing specifies E2 / CAT and oxygen-sensor OFF, EGR OFF, EVAP-related functions and DTC OFF. Verify ECU ID, software version and vehicle compatibility before flashing. An incorrect write can damage the ECU.