You really are missing the point it would be more powerful with efi, that's not the point, neither is "strangling the the car with injection", no they are so much more effecient they naturally run leaner mixes due to higher air speed.
I would never run a engine of any kind on carbs unless rules dictated it, does anyone else ?
I agree with the ford system on some of thier cars, but they have also done some ace stuff too.
I can't see the point of a std ecu if you are going to seriously tinker mod wise.
The main point pob that you missed though is THIS WAS AIMED AT THE AUTHOR OF THE QUESTION.
For the record I get 350+ to a tank from my cossie, now it is mapped correctly instead of aftermarket hit and miss chips, and now it is NOT on closed loop, worst idea I had that was.
tabetha