These kits are a complete waste of money. They tell you its a cold air intake but what they dont tell you is that the stock is a cold air intake as well. In my opinion, unless your into deep water and mud, leave the stock intake for a couple of reasons.
One, its concealed more so that your actually get colder air when its stock. Where do you think the air is at a lower temperature? Right next to the engine block by the exhaust manifold with an exposed filter or behind the grill concealed. Hm.
Two, It was designed that way for a reason, one being that it helps with cold morning starts. Ever see the little tube coming from the exhaust manifold going into the stock tube? Gives it some warm air so you have faster "warm-up" time. You want colder air, take it off.
I had a drop in k&n. It did absolutely nothing but make my oil dirty.
I fabbed a cold air intake with a cone filter, It did absolutely nothing.
If your not going into water deeper than your front bumper, leave it alone. But you dont have to believe us, what do we know?