I had done a test a while ago, I took an AEM filter, a piece of 3 inch aluminum pipe (part of a cheap ass ebay intake) and 2 hose clamps, you take the piece of pipe and jam it into your stock intake hose, it fits pretty good actually, then use one hose clamp to hold it in place, you put the filter on the other end and use the other hose clamp to hold it in place. With this setup you can actually fit the cone filter into the stock airbox if you want to. I did a test between the setup with no airbox, the setup with the airbox and an AEM short ram. and to be completely honest, there isn't much difference. You can VERY SLIGHTLY feel more with the AEM intake in place, but by no means enough to justify the cost of the intake.