is there a way to make the stock air box better? louder? I just really want a low growl tone that I heard you can make just by doing something to the air box.

 

Why don't you just get SI or JWT or CAI? southwestautowork selling JWT for around 100 shipped i think. It will make your car louder, and add few HP. I don't think you'll gain any HP on stock filter, maybe you can get it little louder, so ppl think you have intake. lolz.