On the stock intake on an I4 03 camry there is a plastic pipe and a odd shaped box on the intake pipe between the throttlebody and the filter box. I have removed them and plugged up the holes. I am not sure if it did anything, but the exhaust sounds a little bit deeper but i dont know if it is just in my head. Can this do any harm to the engine? Will there be any advantage or disadvantage to doing this? I have been driving it for a day and it seem sfine so far. I dont have any pics right now but i will try to get some tommorow.