correct Lew.
that is another way to tailor the advance curve.
this is where "try it and see what happens" comes into play.
most of the time, a super tune is not done in one 20 minute period.
just because your buddy runs advance can #xyz, doesn't mean it is the right can for your combination.
it may be CLOSE, but not necessarily right ON.
i think it's member Cab Burge that says : "tune, tune, and tune some more".
lots of things to consider to get the most from your particular combination.