I've had one of the older EZ-EFI systems on by cobra for a couple of years now and it has been good I've had little to no problems with it. I followed the instruction when installing it to the letter and when finished it started first go and idled straight up. I did fiddle with the air fuel ratios a bit but was nothing. The only thing that has gone wrong was a sensor stuffed up I rang FAST up and they let be know of part and as it turned out it was the same part as off a V6 commodore which fitted straight up plug and all.
As to do with the ADR I cannot comment but for me the system has been good I hope this has helped.
Welcome to the forum Dog Chops.
What engine did you add the FAST EZ Fuel to, and where did you purchase the FAST EZ Fuel?
More details on your Cobra?....and pictures?
Cheers,
Glen