I see a lot of post regarding K&N intakes. K&N seems to be the most popular on this board. What about other brands such as Injen, Airraid etc. Do these other brands not give as good results as K&K, is it price, ease of installation or what? I am considering putting one on my 2004 Expedition, 5.4 L and was wondering why K&N seems to lead the pack. Thanks in advance to anyone with any input.

 

I GUESS IF U R THE LEADER OF THE PACK U GET MORE RECONITION