Is the hypertech the only product right now that offers tire change calibration for the speedo? Do any of the diablo products offer this currently? I'd rather buy a diablo for the speedo recal since the possibility of tuning ability down the road.
i don't know, but if you are regearing, no calibration is needed. the dealer can correct speedo for increased tire size. some say they can only correct for up to two tire sizes, check with your dealer on that. since none of the name brand programers have come up with anything for the 11 and 12 models, i doubt we are going to see tuners for our trucks, save your money.