Have you noticed this on your Mazdaspeed?

look at the bottom of your engine bay, the entire BOTTOM of it has the same lining to keep air from adding some uplift ( i guess ) noticed it when i was putting in the intake
 
it is for noise. To keep the noise of rocks down. If you ever owned or driven a MSP with low profiles on and driven over sand or rocks, or any protege really, you'll know why.
 
Even though the MS6 is a totally Japanese built car...that is an example of Fords influence.
 
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