OK...heres the deal. I am waiting for the SR CAI, but my friend bought a K&N filter from ebay for his 2001 Elantra. He says it just barely won't fit so he wants to sell it 2 me. My question is weather or not it is worth the money? It is the kind that replaces the factory filter. He is trying to tell me it adds like 5HP. Should I buy it from him as a temp untill I get the CAI, or should I just let him try to send it back because the auction listed it is tiburon/elantra filter?

Here is the auction he got it from

 

Yes, they do work!
I had a K&N drop-in since like 2 weeks after I got my Tib, and it's a Hellava great improvement from the stock paper filter
Give him $15 for it wink