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does anyone know if when you load a custom tune you can go in and change the transmission settings before installing, or is it just a tune file that can not be modified?
ok, so my truck is the "forgotten" 03 is the diablo tuner even worth a crap on my truck, i am putting a trubo kit on and need to be able to tune it. i know you cant do tranny stuff with it but thats not my concern. also what is so bad about 03 that 04 has. Can you do like a pcm and tcm swap or a wiring harness swap with new computers ? i mean whats the deal with my 03 that limits me and other years can do more ? What is involved in doing a swap like that to convert to a 04 or 05