IIRC they are not out yet for 4th gen 6.7s yet.

 

Why and where do you get the efi live? I just got a 2012 cummins. I'm looking for max mpg.

 

Read post #11

They haven't made EFIlive for the 4th gen 6.7 yet.

 

Efi Live has 3 Different tuners. Smallest being the "Jack" tuner for stock trucks and then the "King" for trucks with basic engine upgrades and built trannys then they have the "Ace" for heavily modded trucks. Alligator performance has them if you want more info

 

I think your talking about cummins tuners autocal versions. EFI Live has two tuners available to cummins owners the V2 and Autocal. The "Jack", "king", and "ace" are all there name for the different versions of there tuner according to mods. However, it is best to have a tune built just for your truck and your needs. And thus far the only year models supported are 06-09 cummins. Lazarsmith offers EFI Live tuning and MCC to the 4th gen guys that don't want to wait.