I've ran the Tow,Street,And Performance PIP tunes on my 15'. I like the Performance tune the Best, However I tend to leave it on the Street tune for the Lack of Smoke.The Performance tune isn't Horrible smoke wise, As long as i lockout 5th & 6th in town.Its when its in overdrive and i have to pass someone that I'll get a big cloud and i Hate that lol..
I've never ran the Extreme tune on mine.Haven't seen a reason to do so just for Daily driving.
Charles