dhworkin, this is just an update. A few weeks ago, I was very fortunate to find someone selling a used but complete Moates APU1 setup on this site. The price was more than reasonable so I jumped at it and was able to get it. This past week, I've been trying to get TunerPro RT to connect with the AutoProm via the serial USB and COM port. Slowly by read and re-reading, as well as clicking on buttons in TP, I am making some progress.

Once I get this part down pat and have confidence that I know what I'm doing, I want to read, copy, and download the .bin that is currently in the old 16144288 ECM.

I'm still tracking this thread to see if you have found answers to your problem.