How to calibrate the speedometer?
I'm seriously considering upsizing my tires by about 1" diameter, from 33" to 34". I would like to fix the speedo and shift points to accommodate the new size with as little expense and trouble as po...
Forum Discussion
ScottG wrote:
The dealer can only make adjustments to stock size tires that were avail.
For true custom adjusments you need a programmers like CnF suggested.
And you know this to be fact about the dealer? On my Ford they plugged some number in their computer that they had some forumula had to do with the circumference. Like when I added the 50 aux fuel tank, they had to reprogram the computer so it knew the total number of gallons avaialable
