Please share your opinion on installing a K&N Air filter for the 5.6. For those of you who have installed them, did you notice any power and or MPG gain, or did you just purchase it for the long life span?

Thanks for the input.

Zach

I have a K&N CAI (the prototype - finished product) for this engine and I can tell you this simple modification increased my HP noticeably!!! it's been on the car since january this year and ive had my car since it was new (2012) so the gains are realized and not placebo.

i will just swap out with a new one when these get dirty. im much too lazy to clean them. so every 30K, maybe less based on eyeballing the filter.