More work accomplished this morning. I pulled the ECU, blew out all the connections, painted it black, painted the mount black. Made a bracket to mount the engine fuse harness and obd2 port to. Bolted all that stuff in. Reseated the harness in the computer and fired it up again.
This time, it was hitting on all cylinders. Sounds great.
Here's the video.
https://youtu.be/Lnx1zlLlOJs
Here's a couple of shots of the computer mounted and the bracket.
I still have a lot of routing and straightening to do, but it's getting closer.