Got bully dog have not been able to get it to work ,have talked to bully dog rep, they said they were going to have write a new program for my truck. Still waiting to hear from them so I can program my truck and use the b d x Box they said the Product was new still trying to train staff about product. It actually messed up my truck had to take program out truck would barley run. Now it runs fine without it . Hope new program works!!!!!
Thought it would give better gas mileage, but really haven't seen it. Easy to follow directions and updates installed. It may growl a little more, but I also installed a k&n air filter at the same time and it was supposed to be a boost and still haven't seen any boost with either! So maybe if your foot is always in the gas it may save some, but the Tundra 6 speed is a shift monster and I did notice shifting differences but no change in my.