will the Phoenix recalibrate my speedo?

[fifity]

Bringing this back from the dead. I am running 37's now and am having 4.88 gears thrown in. Truck originally was on 31.5's with 4.10 gears.

My wifes friends husband is a ford mechanic and I am trying to see if he will recalibrate the speedo with their computer.

Do I risk anything with the PCM being updates etc and compatability with my 6 pos chip?

Or should I just wait to find some One with an AE?

[907DAVE]

Nope, just make sure the chip is out before the re-flash.

[fifity]

Out out? Or on the stock setting out?

[907DAVE]

In your glove box out.