SRAD749, The shop I inquired about installing a power commander said the auto-tune was a must have. He said it automatically adjusted for altitude, temperature. The big plus seemed it would eliminate the requirement of putting the bike on a dyno to make a "custom" map as the "autotune" feature would take care of that. My only minor hesitation with a PCV was if it destroy's your mileage (ie, bike range), but if the PCV is a go, I'd think the autotune would be also. I guess other than price, I don't know any down side to the autotune?