**Edit**
What I had typed doesn't really pertain to the 08's. Pay no attention to the loose nut behind the keyboard.

 

ok you guys win, I just ordered a 3865

 

Unless your really gonna use the SC 3865 to its max potential 90% of the time, Go with the 3815. I did and I love it, all that other stuff is cool but the basic power and shift improvements will be noticeable enough with the 3815.

 

 

This thread is convenient for me, as I was just looking into getting a SC tuner. Since I have a 2003, I don't think the new features of the 3865 will work for me. Can someone confirm this for me? I think the 3815 is all I need.

 

Well im walked into custom trucks inc a local after market truck part store to see if they had any 3845 sc tuner i currently have an 3815 and found out about 3865 lol i had origionaly got it for my 05 4.7 qc but i want more trans options .im trying to do some reasearch to see if its realy worth it i drive hard with a heavy foot so can anyone explain the torque managment to me plz