well my official cold air intake is a 4" air induct pipe with a 4.5" mushroom air filter on the tip in the front bumper where it can suck in some fresh air.
"Car eats bugs from going too fast on the highway."
took me an hour to nibble a circular hole in the panel and about $15 for the pipe and connectors then another $15 for the filter off of ebay. looks and sounds stupid but works well. car performs and sounds better than before.