Discussion Starter · #1 ·
Hello. I'm new to the site. I just purchased a '97 Dodge 2500 4x4 with a 5.9L Cummins. I would like to bump up the mpg. The truck has a 4" exhaust. I just ordered an AFE Stage 1 cold air intake system to help it breathe easier. Since it is a 12-valve engine, no chips are available for it. Would you know of any way to increase mpg in this engine/truck. Would taller tires help? It has a 3.55 rear end. Thanks.