I recently bought a stock air filter assembly with a K&N filter off of EBay to to see what I could do to modify it. I immediately noticed that just prior to the MAS, the housing has a built in, very fine, screen. I can just imagine the restriction this imposes, just as bad if not worst than the snorkel. I'm going to see what the best way to remove this is, then remove the one on my car and give it a "seat of the pants" check. Any suggestions?