99 v10 trans and tire programs

[8hondo]

does any one make a programmer that can change per different tire and gear ratios'. hypertech only goes up to 34 inch tires and no gear changes.

[ThomasT]

Well… as far as the gear part is concerned you don’t need to change anything in the computer. You could put anything from 3.08’s to 7.17’s in your truck and it would not affect the computer one bit. The reason for this is that the Super Duty along with some other Fords use a tone ring on the carrier and a sensor on the rear end for not only your speedo but your ABS.

If you need to change your speedo for tires larger than 35’s or 601 revs then you will have to get a Truspeed by Superlift.

Thomas