I finally got my K&N air intake and installed it yesterday. It took a couple of hours, but with the great instructions, it wasnt as difficult as I thought it would be.

I already had a flowmaster installed previously, but hadnt seen too much power gain. The intake does make a big difference. It seems to have added new life to my old Xterra. I get much better pickup, and I find myself using a lighter foot on the gas pedal now. Hope that will help the gas milage too.

The only problem that I have is the sound. Although, it sounds Great on local streets, its fairly loud on the freeway. Or maybe i just need some time to get used to it. I drive quite a bit on the freeway, and the drone has been bothering me a bit. Is this something that everybody else has noticed with the Intake (or maybe the combination of the intake and muffler).