Quote:
Originally Posted by Bill @ CAI Inc
It is sealed, it is sealed from the hot air in the engine bay. Its open on the bottom because its drawing air from outside the vehicle where it is coolest. Our lid design will hold a vacuum much better that a soft flexible rubber seal that adjoins the hood liner. When a strong vacuum is pulled inside the box a soft rubber edge will let some air pass by, an aluminum lid will not. Although the difference may be small, it is still a difference that when added up with all the other litle things we do will help increase performance.
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That was the point in my post. The seal on the Air Raid box just butts up against the liner on the hood. The one I saw the seal was starting to distort itself and appeared to me that it wasn't going to seal very well.