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It's called an "Air Dam" and it's purpose is to reduce air turbulance under your truck thereby slightly increasing your MPGs. The one on my 08 was only about 3 inches tall, but the ones on the 11 look like the great wall of China. From the looks of the snow in your locale, I would leave it off untill the spring. BTW I like those chrome towhooks think I'll order a set. Happy New Year.
Air dam - valance either or, it does both.
I'll take a picture of it when I make the repair, the panel covers a wire harness that hangs below the sheet metal.
And with the size of these trucks I doubt it does much for mileage.
Think I will have to make this one into a winter version and get a new one for the spring time.
I have been wondering how well that was going to work in snow. Last winter, my 06 pushed through some pretty deep drifts with no issues. I figured the air dam was going to be a problem in deep snow.
I don't know if it would fit or even if they are available, but maybe the shorter version from a Job 1 08 truck would do a better job for you.
Don't know if you saw the threads regarding the valance. You can either cut it down easily or buy one to fit the 2wd truck. The 4wd version like your drops down 7" and the 2wd is 4".
you don't want to cut it down nor put a 2wd short one on it.
it's purpose is to reduce wind drag.it wants to be as low as the front diff on the 4wd in order to do its job properly.
just remove it in bad weather.they do work well at saving fuel.
you just need to be mindful,and remove it when required. http://ecomodder.com/forum/fuel-econ...cations.php#45
Originally Posted by Sgt93
Sorry it happened. Your rig is gorgeous! I really wish I had a dually. I don't need one but.....who cares! lol
I wish J&J was still in business -their stainless air dams would look great on these trucks! I'm thinking of doing the 2wd valance and chrome tow hook conversion on mine.
I tore the one off my '10 last winter here in MD. I backed off a snow bank and my wife pulled my license plate out of the bank. Later I heard something dragging, and had to pull it off at a rest stop. I went six months without it, then fixed it. Didnt notice any difference with or without it.
Replaced all the J-nuts and push pins with 7 1/4 20 x 3/4 long stainless bolts, nuts and fender washers. Left the J-nuts and push pins off.
Should be stronger now so that the next time I do this it will break off completely.
2nd picture shows (not very well) that the air dam is doing more then moving air, it also covers a wire harness.
Same problem here. It just happened, so, luckily no damage other than the ripped slots.
I was thinking of using sheet metal and riveting it to the underside of the Air Dam and using the factory J-clips through the metal, that should stop it from riping out. But your idea is much easier!!
I wonder, has anyone tried to relocate that wiring that gets exposed?
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