I recently purchased a 2003 GMC 2500 Duramax that already had the Edge Juice with Attitude installed. I was under the impression that when you adjusted the tire size on the Edge that it would correct the speedo/odo but it does not. Is there any problem with using a Hypertech programmer to adjust the tire size in the computer as long as I don't make any of the performance mods with the Hypertech? I just can't stand those gauges not being correct.