they adjust themselves depending on knock and the o2 reading on idle and cruising so they do self learn to a degree. more so than the likes of the power fc
the apexi pfc has to be told to look for a target a/f (unfortunately it cant do knock)
so that is not a problem.
these ecu's are just like the stock ecu's, they look for a target a/f ratio, and a target knock,
they have had little japanese people painstaikingly programming them for hours and hours, with plenty of r&d done.
they do not "self learn"
does the stock ecu "self learn" NO is the answer, and it is the same with these ecu's.
jap's made these ecu's run rich, just like toyota did with the standard ecu.
they look for a target a/f (i beleive on a stock engine when on full boost itbetween 11+10)
these ecu's stick to this same principle.
the reason the stock ecu doesnt do this is because of the built in fuel cut, as toyota never intended people to run the car's at there limit.