Front Air Dam
This is a pretty big mod, but it’s also really inexpensive. It’s also super ugly. But hey, we’re trying to save fuel here, not win SEMA. The key is to extend your front bumper down below the lowest part of your truck. The idea is to keep air from flowing underneath your truck. The less air running under your truck, the better. There’s a reason why race cars are so low to the ground.
Ugly, sure, but it’ll likely net you over half a mile per gallon. Every little bit counts!