has the p1000 code cleared after the PCM update? otherwise still in relearn mode, which may provide false assurance. testing primary and secondary resistance on the coils is usually how the coils are proven out. of course in operation you also have the heat factor from the engine bay as well as coil firing to account for.http://www.nicksmustangranch.com/Service_Manuals/2014/2014_Taurus/Service%20Manual.htm what year is your SHO btw, i don't see info in the signature