Well (insert your own long string of profanities) it still is haunted.
I found a used OEM Bosch black coil and put that in. Since I still can't find a reliable new coil for a 3.2 Carrera I went with a used coil.
I happily put in the DME with the fresh repair and full bench test from Steve Wong and went for the test drive. It ran like my 911 is supposed to while warming up. I was smiling and figured my 911 was exorcised of the ghost. It got to full temp and I was enjoying my car again. Driving along at 50 MPH a couple miles from my house it was like someone pulled the coil wire. The tech was still reading but there was no go pedal. I started my right foot madly pumping away and it would relight for a few seconds.
It would die often but fire up and go like complete normal. At wide open it did seem to run just fine. I rolled a couple of stop signs (it is a very rural area and there were no other cars in sight) and got the two miles home.
My garage in on the side of my house and it is easier to back into the bay I use for maintenance. As it sat there for the second needed to stop and get into reverse it idled fine but as I went to back up it died. It started up and died a few times before I backed into the garage. By the time I finished cussing and got out the test equipment it had cooled enough to have no issues to find. It is like chasing a ghost.
I am ready to throw some more parts at it. New flywheel sensors and new head temp sensors. I already have a spare fuel pump I take with me on my long road trips. I may throw that at it as well.