If I was in Florida and was looking for someone who knows their **** I would call Van Collier at Revan Racing. Hell of a nice guy very down to Earth and he will get you straight. He has a shop and website in Collier County and works with Lund on tuning.
I agree with WJBertrand. I had the Ford Racing tune on my 2012 (manual). If you want a warranty after that tune, you need to have the dealer install it.
Later I installed a Bama tune in the 2012. No comparison. Bama tune butt dynoed better. Daily driver.
My 2014 GT (auto), I installed a Bama tune. It was better than the stock tune but did nothing to the trans.
After about 10000 miles with the auto, I got the Bama V2 tune. Great for an auto. Was a slug before before. The shift points are changed like an old school shift kit. I'm very happy with it.
There are a lot of smart people in the history here. If you have an S197 Mustang it's still all good. Especially a coyote.
I have a 2014 GT Auto. I installed the new BAMA V2 tune. Really pleased with it. No issues at all. It did a great job of waking up the performance. The shift points are very firm and precise without being jerky. BAMA has definitely stepped up hier tunes.