Re-gearing question

[skysthelymyt]

I'm sure it's been asked before but here goes.

When you re-gear (let's say go from 3.55 to 4.11 gear ratio), how did y'all recalibrate the brain box? Do the speed sensors have to be changed?

 

[FirstOnRaceDayy]

You'd have to recalibrate the speedometer, you can do this with an SCT tuner. Its possible that a ford dealership could do it for you, not sure on that.

 

[corkey]

the tire size makes the difference in the gear swap,, you try to make it as close as possible ,,

 

[Ronin8002]

I'm sure it's been asked before but here goes.

When you re-gear (let's say go from 3.55 to 4.11 gear ratio), how did y'all recalibrate the brain box? Do the speed sensors have to be changed?

I used an SCT tuner. Supposedly the dealer can reflash the computer for you instead. Not sure what that would cost though.

 

[skysthelymyt]

Ok sweet. That's all I wanted to know.

 

[Wills05xlt4x4]

Dealer charges a little over $100 if I'm not mistaken...
And it does make a diff in shift dynamics if nothing else...
Truck needs to know a actual speed to make proper shifts....