RON @ SUPERCHIPS wrote:
To be honest it is not, and I do not know when.
Your best bet would be to get a tune with HPTuners.com
I don't want to lead you any futher for the tuning, with out having some foresight.
Ok, thanks for the help Ron. Iv just been asking due to the fact im getting a leveling kit soon for my 2500HD and id just love to have the little more power and calibration of the new tire size is all.