Getting Rid of Handheld

Hey Guys,
I'm selling my Hypertech PPIII! Complete waste of money. For my needs anyway. The only possitive use I got from it was I recalibrated my speedo after going to a bigger tire. I lost that when I restored my factory settings. My question is, Can the dealership recalibrate my speedo back to match the size tires I'm running?

I was told by a dealership here that they can only re-calibrate for the tire size if that tire was offered as a factory option. One option that is probably worth looking into is a nelson tune.

Nelson all the way. www.nelsonperformance.com

or even a wait4me tune.... dunno the website.