True Dave.The thing I am talking about is a example of Roger who is trying to get the tune down on his EFI.I am sure his set-up has a o2 sensor and temp sensor. He is still working on his fuel curve and ignition advance.What Roger is doing is not uncommon for the aftermarket systems.
I think one of the key questions I am asking is if there are self learned systems,then why are there tuning opportunities over and above that??.