Like the title says looking for 1 drd tune for best mileage. I only tow a bass boat, truck is on highway 95% of the time. Completely stock. What tune are yall seeing getting you the best mileage? Old school train of thought was run biggest tune you can and keep your foot out of it and you were going to get the best mileage. I'm coming from a duramax and using hptuners. New to the ram and cummins....
TIA

2018 Ram 2500 4x4 mega cab 6.7