Originally Posted by
markk
My first piece of advice, use a system that a) is still in production. b) has had an update in the last 3 years, c) has a community of support. Without all these don't bother. If that is your ECU at the bottom does it have good lot of support to help you?
Seriously pal, don't use anything old. It will cost you in the long run.
"Old" is relativ. An out-of-date hi-spec management would still be a better choice than a cheap new one. But as mentioned only use one for which you can get support.
Converting ERST to standalone and using FRST/XR2i/3i EFI parts? The EFI injectors might cause problems. Also many 1990s EFI sensors won't work with most managements as these don't have a voltage signal. When using an EFI inlet you should also use an EFI head. You can keep your standard fueling setup (pump, filter, lines), just bin the MFI fuel pressure regulator and connect the EFI to the MFI lines. You usually won't need the pink MFI fuel pump relay as modern managements do everything like priming so you usually just need a cheap load relay.
There are several choices for the ignition, I'd recommend to run CPS, you can either use an EFI bottom end and flywheel or your buy an aftermarket CPS setup, Burton sells these, bolts right onto the crankshaft pulley. Be careful when using twin coils. You can connect them directly to some aftermarket management systems, some (especially the cheaper ones) need an amplifier. You might use the Ford EDIS modules, but some of them (iirc the earlier types) are meant to run independent from the fuel management and already are programmed with iginition tables.