So I bought the livewire with 5 star tunes loaded and dig it alright but the main reason for doing this was to correct my speedo for 37" tires. Through many different trials with nick and Chris at 5 star the verdict is that my truck (for some unknown reason) cannot be corrected. Which blows. They suggested a "truspeed" sensor but they have been discontinued. I've called speedo shops and nothing. Any help her guys would be kickass. Thx.

 

Did you try the local Ford stealership!?

 

No I Havnt. They do that kind of thing?

 

What year truck?

My '01 can't be changed with a tuner. I CAN set the rear end ratio, or tire size, but it doesn't change the speedo, it only allows the PCM to be better at shifting correctly.

A Ford dealer should be able to change the speedo for the different tires. If I remember correctly, they might only be able to go so far.

 

If I remember correctly AE can also change the tire size, but not if logged in as a V-10....? If you tell AE that the truck is a 7.3 then it will allow for tire size change. I have never used AE but I've read something along these lines here on FTE a couple of times.