Hello all.
I am new to all this tuning stuff.
Trying to learn using videos and such.
I have looked at this tune.
As far as I can tell its not stock.
Can some one with more experience than I look at this and give me there opinion on it.
Any help and info is greatly appreciated.
The truck is an 04 originally a 4.8 now a 6.0.Also trans was originally a 4l60 now a 4l80.
Past that I know of nothing else.