Yep, I know.

 

It was a CAI, after a few months I took the filter off and checked everything out and there was a fine coat of dust on the inside of the intake tube. Id rather spend 15 bucks once a year than take a chance with my engine. I spent $250 on the CAI, that = 16 paper filters, which most people don't keep a vehicle 16 years. So that just doesn't make it worth it in my book.
And you will get stories from each side, some guys saying I have 10 billion miles on my car with no issues, and others that have issues and have seen no benefit what-so-ever from using them. But, if the guys with engineering degrees say to use a filter with a felt edge-then maybe you should.