I did a search and couldn't find what i was looking for so. How many of you guys are using EFI live to tune your trucks. I was looking to tune my truck and tune my dad duramax with it. I saw that alot of you are using HPtuner and i considered it but I think EFI live is a little better for a duramax and I am hoping for the old man to throw me a few bucks so i can tune his truck to. I mean I will tune his truck if he chips in or not. But any way are there any down falls to using EFI live on our trucks.