Originally Posted by HammerZ71

I agree, the big restriction here is the "Hemi Hat" in front of the TB. It's a resonator to muffle sound, especially that of the EGR opening and closing. On a very mildly modded vehicle, a higher flow drop in and just removing that "hat" performs just as well as a CAI. Now when you do other things to increase the flow and use engine internals that can use that greater air volume, then a true CAI starts to show benefits. Now you start getting into a cam, heads and headers, you're gonna want a CAI.

I'd like to do one of the newer "dry-flow" filters like the AEM or Amsoil, but my K&N at seven years old is still in perfect shape and I can't see replacing it at least when there are other places in need to spend money on right now. My Jeep needs springs and isolators bad and that's money that HAS to be spent.

The PCV valve is mounted into the top of the intake manifold, located to the right / rear of the throttle body. Remove PCV valve by rotating counter-clockwise 90 degrees until locating tabs have been freed. After tabs have cleared, pull valve straight up from intake manifold.

If it's not totally shot, it can just be cleaned and re-installed...

Originally Posted by Arctodus

My buddy put a K&N on his truck and used too much oil on the filter. It ran sluggish as well. He replaced 2 spark plugs that had gotten coated with the filter oil and cleaned out the filter and used the spray instead of the bottle and the truck ran great.