2012 expedition multiple misfires

[DB Construction]

In made of some help. I recently purchased a 2012 expedition with the 5.4 l from a neighbor. He stated it had an engine miss and it had been doing it for some time. He said he was told by his daughter that it had started missing a while back but she just continued to drive it. 

 

I ran codes on it and I got the code for multiple cylinder misfires, misfire cylinder 1 2 3 and 4 as well as a O2 sensor code for the upstream sensor on that bank. I replaced all of the spark plugs, all of the coils, both upstream O2 sensors, the catalytic converter on that side which was plugged, the cam phasers and all of the fuel injectors and the problem persists. 

I drove the vehicle 40 miles round trip to get the Catalytic converter replaced and when it wasn't running right I rechecked the plugs and they were all carbon fouled. I replaced them again and it still has the same miss. I unplugged two of the coils one at a time on that bank and it made no difference in the way it ran. Is there another sensor that could be making this happen, could the ECM be bad or do I need to start tearing into the loom and looking for wiring issues? It's burning the plugs in all four cylinders and showing a Miss in all four cylinders so I'm stumped.