Self learning is a marketing ploy. All OEM systems are “self learning” but only for steady state operation. All the transients, cold starts, hot starts, accelerations are not self learning and are what the dyno hours are for.
I have a buddy with a self learning FAST set up. Runs starts awesome and was never tuned in a dyno. Took some driving but it learned pretty quickly.
Another friend has a fitech unit and same thing. Runs damn nice with no dyno tune. He just installed a Holley sniper kit but don’t think he has driven it yet so I don’t know how that one works.