I did it, with my brother. We just went down to the local auto parts store and bought the biggest cone type filter we could find (it has a 3 inch nozzle attachement thing) took out the airbox... it has to nuts on the side.... untighten them (they are either 8 or 10mm) take off the wire from the hfm, and try to take off the wire from the sensor under the hfm. Untighten the clamp that holds the hfm onto the intake boot... and take out the box. The filter attaches right onto the HFM. I made a heatsheild for mine, Its basically just a peice of cardboard, but I covered it with Aluminum, and then taped up the edges, (basically its an insulated heatsheild) I can post pics if you would like, but you will have to wait till tomorrow for the pics b/c I am at school now.