A little lesson in performance modification for your diesel truck today. We begin with two questions.
Would you prefer to run a marathon in a place with muggy, hot, polluted air OR cool, breezy, clean air?
Don’t you think your diesel truck would like to run on that crisp air too?
The stock air intake that comes with your original diesel truck model is fairly limiting. Any stock diesel air intake system is less than ideal, as it’s cramped under the hood with all of your other stock diesel engine parts. 
Therefore, an upgrade to an aftermarket cold air intake is always a good investment. Your diesel truck will run better and longer when you install a cold air intake in order to maximize the flow of cool air to the engine.
The is a number of great diesel trucks that are ideal for the air intake enhancement.
One of the best parts of purchasing an aftermarket cold air intake? The improvement in fuel econonmy. Especially today, there is nothing more costly than fuel. And if you don’t plan on trading in your beloved diesel truck for a girly electric car, you’re going to want to save as much fuel as possible.
There are different cold air intakes available on the market today, so it’s important to find one that fits you, as well as your diesel truck.
What would work best for a 2004 Dodge Ram 3500 with the Cummings Diesel engine. Also what else can I purchase to increase horsepower and increase fuel economy?