Yeah they haven't yet. Have you tuned yet because it will make a huge difference in how it drives with that tire size. I've done a lot of trucks with 35s but the only one I did with 37s had portals.
The Accessport cannot correct the speedometer if that is what you're asking. In fact no ECU reflash device available can at this point. There are a couple of inline modules that are available but I have not tested any of them. What size tire are you running?
The thing that the Accessport in a...