I havent read the entire thread yet bit couldnt resist responding.
I have been using trifecta tune for couple of years. Brand new the trans sucked. Rough shifts, hunting for gear... couldnt decide. I hated the going to neutral as you come to a stop also hated the automatic downshift when I was trying to coast for fuel savings. I absolutely loved the tri tune and it made the transmission shift beautifully and as I was accustomed to in
all the cars I've owned in 50 years. As fuel economy continued to get worse I set the engine tune back to factory but left the transmission tume. Now I've discovered that my decrease fuel economy was at least partly the map sensor and EGR things with all the soot build up. Just cleaning the map sensor today restored 8 of my lost 10 MPG and I'm considering going back to the engine tune to see how it does. It is certainly a lot more fun to drive that way it really wakes it up.