Binary's not that hard. It's either a 0 or a 1.
Anyhoo, you might wanna look into a twEECer. They seem to be pretty popular, as are the PMS systems.
Another option may be to completely do away with the Ford EEC-IV computer and use an aftermarket fuel injection computer. More work, but worth it once tuned properly. Plus, you're not making a bunch of 'hacks' to make it work, as with EEC-IV chips.