OBDSTAR DC706 software works perfectly on European Fiat 8GMK, 8GMW, 8GMF ect ECUs, tested many times.
Our customer did a Fiat 500 8GMK cloning the other week witout problem at all.
You can read, write and clone those ECUs on bench using P004/MP001.
Pinout Fiat 8GMK ECU
Select Fiat Magneti Marelli 8GMK CAN SPC564A80B4+ 95640
Connect
Read EXT EEPROM ok
Read INT flash ok
Write EXT eeprom ok
Write INT flash ok
NOTE: In North America, the ECMs might be same/similar as European/ROW versions but software is different. If DC706 failed to read US Fiat 8GMK/8GMW, send data log to OBDSTAR engineer.
FYI: You can clone those ECMs via P004/MP001 or even with godiag GPT adapter.
For example 8GMW works when connected with Godiag, or thru the pins on P004. You can use the godiag breakout harness instead of p004, it is much easier this way. It also has the 120ohm built in.