Something that doesn't make sense to me, is that you think air is being sucked in from the engine compartment. There is a rubber seal that prevents this. From what I remember there is a heat shield of sorts there....but I don't remember if a metal shield is part of it.

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It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein


09 Jetta TDI
1985 300D