EFI systems don't self tune, they self correct to a pre-programmed tune. That is too complex for the marking guys to say so they call it self tuning. I'm sure that someday we'll get AI enabled EFI systems that can self tune but it might be another 20 years. For an EFI system to self tune it would need to be drive by wire and only a few aftermarket EFI systems are capable of drive by wire.
