I have a '93 S4 with MTM 1+ software and a VMAP. The S4 will be stored for the winter, and I'll be driving a '91 200q20v. Does the 3B ECU use the same software as the AAN version? I know the pinouts between the 3B and AAN ECUs are different, but I'm not sure why the software would be different. I assume there's a VMAP I can but for that ECU. Thanks Mike