Duramax Tuning

** IMMO relearn is required via GM TIS2 with a GM MDI or Mongoose cable in order for remote start and other features to work **ECM is sent out preprogrammed for you. All you will need to do is swap it in the truck and do the immobilizer relearn

ALL EFI Live Autocal devices come preloaded with the customers specific tune to avoid the hassle of having to download EFI live and load the tune yourself. Detailed instructions come with every tune from how to download a simple file onto your autocal,...

Tune profiles explanations Full Support Pack: If you purchased a full support pack, you will have permanent support and linkage to our technician profiles with updates. SOTF Limited Support pack: These profiles are a 4-week limited support. This give you...

ALL EFI Live Autocal devices come preloaded with the customers specific tune to avoid the hassle of having to download EFI live and load the tune yourself. Detailed instructions come with every tune from how to download a simple file onto your autocal,...