I have installed psmbuick cold air intake with the Cool Blue Hose on my 04. 5 and I really like it. Paper is the best filtration but the worse for flow. Most of the aftermarket filters have better flow but not as good on filtration. Without the cold air intake and a new Dodge filter in the box I could pull down the filter minder at WOT. Now with the cold air intake I have not been able to do that. This is all the air I'm going to need for my truck. It picks up cold air from just behind the passenger side front bumper and it still uses the stock air intake, so you don't have to worry about sucking up water. Easy to install, or find out in a recent TDR (Don't recall what issue #) on making your own using parts from the local hardware store.