I am the proud owner of a new 2011 Jeep Wrangler! This is my first Jeep and I am in heaven. I was wondering if anyone knew about adding a K/N air intake...Are these worth the money for performance/gas mileage? Would adding such void the warranty? Thanks for any advice. Just looking for some hints to help performance/gas mileage while enjoying the new ride I have. I do not know why I waited so long to experience a Jeep, but once you go Jeep, you will always repeat.