MPH Off on Speedo? 2001 f-250 7.3 / auto trans

[FrogLeg]

The Mph is off on my speedo in a 2001 f-250 with the 7.3/ auto trans.
How do I correct this?

Thanks.
Frog

[willie]

That can only be done with the factory tool, our predator does not support that, is under the ABS module under customer preferences and it can be adjusted for about a 35" tire thats the limit off the factory setting at least with a NGS maybe different with Fords new IDS tool hope this helps you...