So when in Autotune, after a mapping session, when I shut the bike off, is my map automatically saved, and if so, where? When I go to Autotune again later and turn the bike back on, the datalog is empty.
Are you using autotune kit or without? If you are doing without autotune kit then it's not true auto tuning, it works ok for non-high performance motors but if you have engine work done best to get your bike Dyno tuned or get a autotune kit from Dynojet and get it done right.
To gain maximum power gain reach out to reputable Dyno tune shop or if you plan to do it yourself use autotune kit by Dynojet.
The power vision has the auto tune feature in it. Although it helps to have a tuner like fuel moto look at your data to help it out.