This forum most definitely appreciate your depth of information.
You stated the European that are FED certified will only have Aneriod Compensator. There are VW Jetta and Passat TDI that are CA have Aneroid Compensator. They are electric time, square-ish and round near the firewall.
Also, if it has Aneroid Compensator, what would the acronym be on the ECS label?
I could not find any acronym on ECS , and i do not think there is one for it. I have asked many mechanics about this and they are puzzled. our best bet is call each car manufacturer and ask one of their service guys what vehicles come with aneroid compensator....