K & N replacement for stock filter. Fits right in the box. Have had for about a year I suppose so I cleaned it. Was dirty, but not filthy.
Soaked in the K & N cleaner and re-oiled (Not too much, CEG is clear on not over oiling the filter!).
Anyways, seems to have picked up a few HP's. Seems quicker and peppier and less stutter when cold.
Funny thing is says can go 50K between cleaning. How is that possible unless you drive in a clean room..?
Anyways, I'm just posting to kill time at this boring job!