'12 LT less HP than '07

[Doubeleive]

the 4speed and the 6speed are going to feel different as well, with a tune the 6speed should work much nicer
in the end though no matter what you are going to have different power bands that's just the nature of the beast.

 

[Geotrash]

I received two tune files. One for 89 and one for 92 octane.

That's right - and you also get TCM and ECM files. I corrected my post for clarity on that point.

 

[S1W99]

Not unless you beat on it and don't take care of it, same for stock. The transmissions seem to last longer with the right tune. With a BlackBear tune for example, you buy a little computer from them, when it arrives you hook it up to your truck and record a data log. Then you hook that up to your PC, email the file to BlackBear and in a couple of weeks Justin will email you back a custom tune for the engine and transmission. Upload that to your truck and start driving. It'll get better as the truck learns.

Blackbear it is.

Thank you to everyone for your help.