I have a 2011 ram 3500 4x4 dually. I bought the truck about 4 months ago and when i bought the truck it had H&S delete kit, airaid air intake and smarty jr race me programmer. I have the smarty on sw 3 which is performance and it says 100 horsepower. I currently get about 16 mpg on highway is that great for truck with the work done to it or should it be better and if better what else could i get to make better. Thanks for all replys.