I read that too, which sparked my curiosity since this has crossed my mind before. It seems that the Motorcraft and Napa modules may be okay. I have not seen anyone say a single good thing about any of the other ones.

With some more reading I belive I know how to check to see if they have the timing retard now. Since the start retard is triggered by the starter relay, (it gives the white wire power when cranking). I should be able to give the white wire 12v with the engine running; and the module should cut the timing back (10, 15, 20? degrees?).