Hey John - How is your search going in locating a L-Jet 928-618-106-01 computer ?
From one of my Bosch Fuel Injection Control books it looks like the slight difference between the 1980 - 1984 computer P/N includes some of the external inputs and/or sensors. There are naturally some electronic tweeks internally as well - but the last two series digits (01, 02, 03 and 04) primarily designate variances between the early vs later performance, emission spec's, AFC calibration, timing, acceleration curves, etc..... Your computer 928-618-106-01 provides for the earliest set up. Although there is no indication mentioned in the results of updating your car to a later series I'd assume that you need to at least stick to the correct auto/std transmission.
As a last resort there are Bosch Service Centers on the internet that can repair your computer. They would also be able to provide a definitive answer as to cross reference part/series information.
One other static test that you might try (if you haven't already) is to use an ohm meter to check the resistance BETWEEN one of the computer ground pins (pin 16) and each of the output injector ground signal pins (14, 15, 32, 33). If there is a very low resistance reading between each pair of pins (16 - 14, etc...) it's output amp is damaged or shorted.
I don't think qdac is saying the distributor being off a tooth or the Temp II sensor would prevent the injectors from getting the ground pulse. Qdac was faster than I was in providing some good information...
Good Luck, Michael