OK, it was my turn to do the recall.
Before I brought in the truck, I fired up ProCal4 and updated the app, and then I signed in and grabbed the latest tune for the truck. I flashed the updated tune without any issues and got the same SW and Match that others have posted (SW: RB3A-FPG30A-JG and...
It is true for Ford Performance tunes, unfortunately. The 26E04 PCM update wipes it if the dealer flashes it. And it will refuse to update OTA if you have the tune installed.
Different ambient temperature, different traffic, different road, are all going to change your average MPG. 160 lbs isn't going to net you a MPG either... you could take the same truck, fill the bed up to max payload and maybe lose half a MPG at worst.
I probably shouldn't even have posted...
Apparently it requires dropping the headliner, so yeah that tracks. I'm going to give it a few weeks so the techs can practice on the Rangers on the lot first.
People complain about the strangest things. Who cares if the fans are loud? You don't hear it in the cabin and the truck's cooling system works great even in high ambient temperatures.
I'm pretty sure the "learning" described in this thread is just the ECU slowly (read: safely) adding timing until it meets the max parameters of the tune based on any number of different engine and environmental variables. It also pulls timing back as soon as anything goes awry, such as engine...
I'm coming up to 8,000 miles and my "bad cam phasers" still sound exactly like they did when I bought the truck. It's normal. I stopped worrying about it long ago.
The dude that claimed all of the videos in this thread were bad still hasn't posted a startup video of their own, btw.