I don't have any major upgrades worth a tune, and if I do have warranty work done I don't want them griping about a tune messing things up to void warranty, or detuning to have work done. If necessary, I can just pop this back off before bringing in.
I have a friend who had the Forescan fix done on his ride and it messed up his Autostop batteries and they had to be replaced. Luckily he was able to disable before going in for warranty work and things worked out, but lesson learned at least.
This guy goes over the options -