I've heard a lot of people talking of how much of a mileage change a change of exhaust, or intake or tires and wheels will make, etc.
But, I've noticed that no matter what I do to the truck, my mileage is directly and most importantly affected by my right foot and the prudent use of it.
I've kept a rule that maintaining the tach at under 2000 RPM does accelerate the truck sufficiently and holds speeds of up to 75 MPH on the freeway and that's all that I need.
So, I suppose my self imposed rule of keeping the tach under 2K by controlling my desires to drive like a maniac or be affected by bad drivers goes back to the mind and moderating your desires.
DO you agree that merely prudent driving is the best way to save gas regardless of mods?