Quote:
Originally Posted by mosby
I know everybody here really likes coroplast. But I've got some spare 1/4 (along with 3/8, 1/2, & 3/4) ply in the tool shed. So it's got the edge.
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If you've got it, use it. It's going to weigh a bit more than the plastic, but probably hold up a bit better if you make sure to put a good coat of paint on it to prevent water damage. Overall the extra weight probably won't make a dent in the MPG's as it's only a few pounds.
Quote:
Originally Posted by mosby
The reasons for using a factory air dam: 1) ease of install, no engineering required. 2) will look like a factory job, air splitter will be hidden.
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The reason Bill in Houston mentioned bracing it a bit more is because of the added wind load on the air dam. It may not be a problem, but the last thing you want is the existing dam cracking due to the pressure. A $2 bracket or two is far better than the $50-$100 air dam.