Also love my FP3 too ... I'm sure it isn't the best way to tune your bike, but it worked great for me when you don't have a bunch of cash to spend. I also didn't want to spend for a dyno to watch somebody beat the crap out of my bike either. I had to update my phone since my old one was only 2.2 Android and you need at least 4.0 for the FP3 program to work, no biggie ... new phone was only 45 bucks and way better than my old $100 phone.
I would bet he could fudge the combo on the FP3 and say he has Power Duals or pick some other catless headpipe with stock mufflers, download the map, flash it and then run the autotune and be just fine, but don't hold me to that. May not even have to do the autotune, mine ran great with their map for my pipe. I did try the autotune and apply it to their map with no drastic difference ... I really didn't populate the tables as much as I would have liked to either so maybe that's why I didn't notice much.