Quote:
Originally Posted by Big Dave
Aerohead is probably right. Anair dam plus a belly pan would give the best MPG.
I modified my air dam this summer. It was 3 inches above grade and it grounded at the least provocation (like braking or the steps in my driveway). It worked really well. It was worth at least 0.75 MPG.
But I got tired of listening to it grind, so I shortened it up to 9 inches above grade.
Now it doesn't drag or look dorky, but it is nearly worthless in improving MPG.
I'm trying to learn GIMP so I can shrink down my pix to a size the site can handle.
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Very interesting. I've not put an extended air dam on my truck, but after reading this I might have to try that. I also plan to drop mine about 2 inches. Both should help in the MPG arena...