@Huffdaddy1 nobody ever wants to admit that their driving habits suck but a person's driving style ranks right up there with poor maintenance and location for mpgs. Injectors maybe if you have reason to believe that your current ones aren't functioning properly. Couple bottles of injector cleaner might be just as effective. CAI also maybe, though some may debate that. Keeping your foot off the accelerator pedal as much as possible, using cruise control and properly inflated road tires are your best bets at improving your fuel mileage. Also, check your brakes to make sure they're not dragging. And stay under 60 mph. Sounds horrible, right? Unfortunately If your 2500 5.7 is capable of achieving 20 mpgs, that's how you'll do it.
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