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"If your underbody is completely smooth, an air dam may actually hurt your fuel economy."
For some time now I've been pondering lawn-edge air dam vs. belly pan for my Sonoma. The truck already has the factory "sport" lower bumper extension, and is lowered 3" front and 4" rear.
I already own a length of stiff edging with a drop of about 5", which would leave about 3" of ground clearance at the front and a bit more than that from the front wheels aft.
For the belly pan alternative, the elections are over, so coroplast is available by the acre, and I have a small roll of aluminum gutter forming flat that can be used in places where the coroplast isn't ideal.
The truck already gets better than 32mpg highway, and gets used on rough dirt roads when we go camping.
Which way should I go? Opinions are very welcome!
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