Basically it sucks. The filter that came with it wasn't even close to fitting when the adapter is properly mounted. I would have had to cut out the bottom and side of the airbox for it to fit. I sent the filter back to the ebay seller, and the assholes never sent me another one. So I ordered the k&n for a pro-design kit, and that almost fit right. I still had to cut a chunk out of the bottom of the airbox to get the filter to fit right though. Definitely spend another 10 or 20 bucks and get a Pro-Design or Noss Machine kit.