I just found this on the Kenne Bell website. I know a lot of guys want to get the most power they can out of their Jeep and think a standard CAI will help. Please read the following:

Kenne Bell on Cold Air Intakes

This is right on for the most part. The best way to get cold air into the engine is with a snorkel, pull it from as high and away from the engine as possible.

 

Even factory air boxes pull air from warm engine compartment