No, not sure about tranny programming, but if I'm starting a climb, I'll take it out of Econ so it will downshift just a bit sooner, and when I reach the top of the hill, and we're over 56 or so, I'll put it back in Econ and it'll shift into 6th. So roadspeed and Econ determine 6th, at least with my ride. We've been yo-yoing up and down the Oregon coast all summer, so not much opportunity to 'let it fly'.