Originally Posted by blacknblue22
This sound that I talked about happens prior to the "sucking" noise. This is way out there but I'll try to describe the sound. Have you ever seen Christmas Vacation when Clark asks for a drum roll when he is getting ready to plug in the lights? That drum roll sound they make is the best way to describe the sound I hear. I told you it was way out there.
LOL ... good reference!
Not sure what to suggest ... but a sound like that can only be made by something moving, so something, somewhere has to be loose the way I figure it.
These things are pretty easy to take on and off - try sticking the factory airbox back on and see if the noise continues. If not, then go over the K&N unit with a fine-toothed comb.
Sorry - no brilliant words of wisdom other than that!