i go 10 miles down the hwy, vary your driving like that other guy said leave it in 3 rd for a while slow down bring it back to speed, back drive, mix it up, then turn it off for like 2 minutes, open the door turn the key on and off a few times too, then re start it, repeat two more times.
by the time i get back home ive gone 40 miles pretty much. then some times they will change a bit more over the next few days.
when im tuning ill let things go for a week so i know it learned, i also dont drive much at all. car sits a lot and does short trips when i do drive it.
i just did some tuning a few days back, crap just learned yesterday got the 3.2 at 15.5 timing wot kr free today. and its pretty warm out today.
