Tuned a 07 5.9 that had a Smarty on it previously. The Stock file would throw a P0602 Checksum code. So took a fresh stock tune and flashed that in. The Checksum code went away, but now the truck throws wheel speed sensor codes and implausible speed codes. I'm wondering if the Smarty changing the ABS calibrations for tire size. Has anyone else had this issue? I figure have the dealer reflash both the ECM and ABS so we can start on a clean plate.