Has anyone used something like Galletto to read / write to a ECU?

Specifically a 97 E320 and 97 SL320 ( M104 engine ) 97 was the first year for Bosch Motronic ME 2.0 / 2.1 computer , 96 and prior was HFM

I want to clone a ECU from the SL to the E as part of developing a new engine for the SL.

The next step would be to find some map sniffing software so I can alter the fuel / spark map.

97 uses CAN bus to communicate with other modules ( like the trans controller ) I've got a demo board from Microchip to sniff CAN if anything on that end of things turns out to be helpful.

Thanks