Duramax Tuning

** IMMO relearn is required via GM TIS2 with a GM MDI or Mongoose cable in order for the VATS system to work. 2 seperate files will be sent to be used for the IMMO being reprogrammed, and one without it having to be reprogrammed. Transmission tuning is...

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,...