As far as brands go, I emailed one of the guys at KRC performance, which is a leader in modifying these trucks (5.2, 5.9, 5.7, etc) and they said they've tested everything out there and nothing holds a candle to the K&N, especially on these Dodge motors. It's the intake they use during all of their dyno testing. That's proof enough for me. And johnjokela, yeah the intakes do get muddy, but I've figured out a way around this. If you get a K&N, they make optional covers for the filter elements. There's a couple different ones, but the one called a DryCharger was originally developed for marine motors and PWC's like Sea Doo's and Jet Ski's. If you put one of these DryCharger covers on there, it keeps all that mud and dirty water off your filter, and only decreases your airflow less than 1%. It's one of the most useful things I've bought recently.

 

go with the k&n, i recently got one, and its great. i have a buddy with a similar truck to mine, and he got the Air raid, and you can definatly tell the k&n flows more air. you do somewhat get what you pay for. the k&n is kept out of the heat by the plasic flange, and the airraid just stays in the engine compartment and pulls warm air = not good!

 

I modded mine and it works great, i don't know which one pulls more air, i havent measured it lately.

 

Had a n air raid on a CHevy truck (before my Dodge) It was OK but every time I went through a puddle I would suck up water and the engine would cough and sputter. Not really what I was after[>:] The K&N system has a shield and that won't happen.

 

Sucking up water? How deep was the puddle? I installed mine in a direct feed of cold air, never any problems, just has to be personal preference I guess, I was thinking K&N would get alot of heat off the radiator with the box.