Burbman wrote:
What's the air dam do? Is it a noise issue?
The air dam reduces the air-ram effect where the air is funneled up over the hood of the truck AND down the face of an overhanging camper into the area between those two. The idea is to reduce, not halt.
This has a couple benefits;
1. It slows down the bugs that get smashed against the back wall of the camper. Leaving that area much cleaner and undamaged from high impacts.
2. It cuts down on the wind noise.
3. It is reported that it increases fuel economy. I've not had mine on long enough to determine that, but it makes sense that it might.
4. It cuts down on air buffeting and subsequent door air leaks on my Dodge truck. (there's another thread that discusses that issue.)
This was a fairly simple project as well as inexpensive. I would guess it cost me less than $50 to make and made no permanent changes to either camper or truck, using existing mounting hardware already on the camper.