I have a 04 Dodge Ram 1500 Hemi Sport. I just upgraded my tires to BF Goodrich T/A's 34.7" from the stock 20's, after I put on 3" body lift. I just purchased a HyperTech MaxEnergy tuner and want to get the best milage as well as power from my truck. I could either increase or decrease my Rev Limiter + or - 500. Wondering which is best. Increase or decrease of Limiter? If I recalibrate for my tiresize, would it also adjust for my gas consumption?