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K&N Drop in Filter vs. Cold Air Intake System

54K views 31 replies 24 participants last post by  tigerstripe34  
You're flowmaster didn't add anything but sound...K&N(on top of being overpriced)adds more flow but double the dirt, if you want your truck motor to last don't use them. All you have to do to get a CAI is cut a hole in the bottom of your airbox and keep your original Mopar Hi-flow filter. Simple and free.
I disagree, I ran my 2004 4.7L to 127,000 miles with an open K&N intake and had zero problems.

Spreading rumors such as doubling up on the dirt in your engine by using a K&N filter is absurd.