April 28, 2011
what year is your truck? The speed wizard does this up to a pretty large tire. It depends on what the stock size was, its a correction ratio, not a fixed tire `size`.
In other words if you started with 25" tires, there is no way any device will do 44`s. but if you started with 36`s then 44`s are a walk in the park.
I am not supposed to advertise, so here is the links to some companies to try
also one called jet accuspeed
But instead of going though the pains of getting a different device, what year is your truck I will double check some wiring schematics and tell you where your wire is.