If I could go back to my SHO, I would use a proper tuner and not the one that starts with an "L". All this time I thought the transmission was going out, and it turns out it was just an issue with their tuning. I traded it in since I didn't have 3 grand to replace the transmission. Live and learn I suppose.
As far as my current Ecoboosts, A Flex and my Fiesta ST, I would do basically everything the same except the tuner for the Flex. Had I known I couldn't have them tube out the O2 codes, I would have done something different for the downpipes or tune