looking for options for a tuner on my 2500 5.7L LB. I know the truck is not very popular as far as the 5.7L in the HD but it is what it is and I have it and now I’m looking for options for more power/better fuel economy. I have already hit up HF and they said they don’t know of any out on the market. Does the tuners also go off of weight of the truck? I would think that the tuner for the 5.7L off the 1/2 ton would be the same, unless it does factor in weight of the truck.