edis4 using factory equipment

New to this forum. I am currently gathering parts to start building a 1980 fiesta. I want to put edis4 and carbs on it but do not know how to overcome the limp mode 10* of flat timing. Does anyone know how to do this using a factory ford part or am I required to buy one of the high dollar megasquirt kits? Any information would be greatly appreciated.

MegaJolt Lite Jr can control the EDIS ignition.
EDIS requires a SAW (Spark Advance Word) signal that tells it what advance to provide.
MJ takes RPM, manifold pressure, etc, does a lookup to programmable table to generate the SAW.
So you decide by altering the table.

https://www.autosportlabs.net/MegaJolt_Lite_Jr.

Thanks but I'm wanting to keep the factory ecu for the diagnostic side. I have a snap-on modis ultra and use it regularly so the diagnostic parameters are familiar to me.

The factory ECU is unaffected by Megajolt, it's sole job is to generate the SAW to tell the EDIS what to do with ignition.
You SAID that you want to put carbs on the car, so what's left for the ECU to do?
AFAIK, there is no simple way for you to modify that ECU to handle EDIS.
Unless you can write 80XX assembler code, the ability to flash it into EPROMS, and have a piggyback to run it in the ECU.

Sorry I was on the wrong thread there. im working on two projects and didnt keep my stuff straight. I was looking for like a factory spark control that would work with the edis system. I am familiar with the older electronic ignition systems but dont know if the boxes are compatible with the edis system or not. Is there an electronic ign box that would work? There are a few different cars that had something similar but used different triggers, would changing the trigger components work with the older boxes? Any info is helpful as this car is for my oldest sons first car.

The EDIS IS an electronic ignition box.
You could just bolt on carbs, and live with the reliable 10 degrees BTDC from EDIS.

I'm not sure I understand the drive to convert to EDIS if you're not going to control it properly?

If you're ditching the EFI for carbs (which is silly given the lovely EFI DCOE alternatives available which make more power thanks to the lack of chokes needed) then what does the fancy diagnostic tool do?

If you aren't running EFI, a factory ECU or a programmable ECU for the ignition then I can't see where there is a gain to be had over the original ignition system.

I think the OP's idea is like he takes an ECU meant for a car with EDIS ignition and some sort of EFI. He would pull the EFI bits off the engine and run carbs but keep the ECU driving EDIS bits. The search would be for an ECU that's smart enough to do the EDIS but dumb enough to not notice that it isn't really driving the fuel side.

The problem I see is getting enough sensors to the ECU to actually let this happen. You'd need a TPS probably, and MAP sensor, and probably some other parts that wouldn't be such a big deal like coolant and engine RPM. One of the Megasquirt-based systems like the Megajolt would probably be the smarter path. Seems kind of silly when you're already running this mix of carbs and EDIS.