For a great throaty sound disconnect the maf from the airbox. Connect some aluminum tubing on the end of the maf and put it next to the ign. coil. I don't even have a filter on the end, and i've had no problems. Probably not a wise thing but the maf has a honeycomb protector over it already. Plus no real harmful contaminents get up by the ign coil in my humble opinion Rob P.s. Alot of people will disagree with me, but the sound is awesome.