Im not sure what this is stating exactly.. but if you remove the silencer from the stoock air intake and put the k&n filter in its supposed to be about the same HP gain as a CAI but the CAI looks better and has that cool whistle.
If anyones interested I have one to get rid of. K&N cone "drop in". I need to clean it up. No need for it now since CAI installed and dyno tune completed. Just FYI. incase someone could use it.