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Thread: Rear diffuser?
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Old 04-16-2012, 03:08 PM   #53
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Originally Posted by chaimav View Post
Ok, so here is a stupid question: If this piece of sheet metal can gain 1 MPG, why didn't Ford include it?

I'm not trying to be smart here, but I assume there has got to be some trade-off somehwere...
Is it just cost? Does it cause a build up of heat? Is it more likely to snag something on the road?
cost probably, wouldnt be surprised if the ST has one as an option.
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