I know I saw a write up on the step by step procedure for recalibrating the spedo with a drb tool, I just can't find it. Any one have a link??

 

I don't have a link, but the setup is in the ABS section. They either choose a tire size from the list, or choose Other and then enter the Revolutions Per Mile. There is another setting for Axle type that must be set to "Factory 10.5/11.5 inch" and not to "Other." If it gets set to Other you will read 15 or so percent fast, as I found out.