I really need to get a 12v tune. Currently, the truck has EFI live by Firepunk and has their standard 5 tunes. However, they said they could replace one of the tunes with a 12v tune if I took it up there. They claim that their testing has shown no difference in mileage, which is fine because my main reason would be to make the injectors last longer. I know my truck won’t ever get near what you guys are doing since it’s lifted on 35s but I’d like to try to get more than the 15 or so it currently gets. I’m hoping to see an increase with summer weather and fuel. I’d like to get working on replacing the engine sensors too.