If I cover the outside-w-Dynomat I will have to somehow cover it-w-some kind of carpet or something because it is right there if you know what I mean. I did the inside (engine side)-w-2 layers of a material much more effective than dynomat. Can you tell me if the baffle or whatever it's called id needed? It is a big empty plastic box that "t"s into the intake tube from the air cleaner to the turbo inlet. I'm wondering if this is a quieting item