In this blog, you will know how to replace BMW CAS3 N20 engine computer by CG100 and CGDI BMW.
Step1: use CG-100 to read engine ECU data
Click to enter “ECU”
Click on the engine mode option to enter the current vehicle
According to the software physical wiring diagram wiring
Writing engine module
Click ‘Read EEPROM’
Read successfully and save the data
Show ISN and VIN
Step 2: Use CGDI BMW to replace engine computer
Connect CGDI BMW with engine ECU via OBD, click to enter BMW ISN
Click “ Read CAS ISN “
CAS ISN read successfully
Input ISN Which was read by CG-100 just now
Write successfully, replace engine computer was completed