Join Date: Jan 2006
Location: Springfield, Ohio
The only true upgrade to it, I've been told, is that you don't have to replace it. It can be cleaned and reused almost forever. Actually, I've even heard it said many times that the stock air filter has better air flow than BMC or K&N, and that there is no real horsepower to be gained by going aftermarket. There was ONE aftermarket filter that was said to give you a few additional ponies, but I can't remember the name, and you had to order it from over seas. I believe the filter was made by a company called "DNA", but I'm not certain of that.
I don't care what kind of rider he was, he tested me and got dealt with. +1 in my book.