MotorTrend Long-Term Review - AirDam - Page 2 - Chevy Colorado & GMC Canyon
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post #21 of 31 (permalink) Old 04-21-2017, 01:47 PM
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Thumbs up Air Dam

I have read the various threads and YouTube Videos on the removal horror stories of the air dam. Just added a bull bar and while doing so removed the air dam in less than a half hour with no cutting of fasteners and prying. Simply remove the skid plate or plastic protector under the engine compartment ( 4 bolts ), then there is a black semi triangular plastic piece on either side that the fender liner screws into ( 3 screws on black wheel well liner. 2 inti bottom of fender and a screw with a bolt head into vertical support arm. ). Simply remove the 5 screws and 1 small bolt head and it drops down. with these removed you can access all 13 screws with a standard ratchet and star bit with ease. Don't understand why the majority think its a hard job?
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post #22 of 31 (permalink) Old 04-22-2017, 03:23 PM
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Originally Posted by birdman4 View Post
I have read the various threads and YouTube Videos on the removal horror stories of the air dam. Just added a bull bar and while doing so removed the air dam in less than a half hour with no cutting of fasteners and prying. Simply remove the skid plate or plastic protector under the engine compartment ( 4 bolts ), then there is a black semi triangular plastic piece on either side that the fender liner screws into ( 3 screws on black wheel well liner. 2 inti bottom of fender and a screw with a bolt head into vertical support arm. ). Simply remove the 5 screws and 1 small bolt head and it drops down. with these removed you can access all 13 screws with a standard ratchet and star bit with ease. Don't understand why the majority think its a hard job?
Mostly not having the correct tools. That makes all the difference in the world. Most of these people are going in with the basic hand tool which I'll admit would be really annoying. I have a right angle adapter for my drill so I had majority of my torx screws off in 10 mins. There was 2 in front that gave me a bit of trouble but all in all 30 mins max.

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post #23 of 31 (permalink) Old 04-22-2017, 04:16 PM
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I noticed on the new Silverados that the air dam actually comes up in the center and drops down in front of the tires. I trimmed the bottom 2 inches off of mine and now it's similar to that.

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post #24 of 31 (permalink) Old 04-23-2017, 12:12 AM
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I bought a 2017 Canyon CCSB Diesel three weeks ago. Last weekend I made a trip from Denver to Canon City, CO with the air dam installed, then today I made the same trip with it removed. There was basically no wind on either day. The first trip had just a bit more city driving, the second was a few miles longer on highway.
Last weekend with the air dam I drove 217.1 miles with an average of 29.1 mpg
Today without the air dam I drove 222.9 miles with an average of 30.0 mpg
Denver to Colorado Springs is mostly a 75 mph limit and I was generally running 77 to 78 with a few minor traffic slowdowns on both trips.
Colorado Springs to Canon City is about 50% 65 mph and the other 50% 60 mph. Again I usually run 2 to 4 over the posted limit.
There was probably 10 miles of city driving on trip one and maybe 5 miles of city on the second trip

On the diesel at least I'd say the air dam has very little impact on mileage. Given that the second trip had just a little more highway and a little less city it's possible the mileage was hurt a little but I doubt it was even 1 mpg.
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post #25 of 31 (permalink) Old 04-23-2017, 01:36 AM
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Even if it cost me 10% in MPG I would still have removed that ugly, low hanging POS...
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post #26 of 31 (permalink) Old 04-23-2017, 11:16 AM
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Originally Posted by Gregguz View Post
Mostly not having the correct tools. That makes all the difference in the world. Most of these people are going in with the basic hand tool which I'll admit would be really annoying. I have a right angle adapter for my drill so I had majority of my torx screws off in 10 mins. There was 2 in front that gave me a bit of trouble but all in all 30 mins max.

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Torx screws? Oh for crying out loud......LOL.
I hate those damn things!!

Horror/Memmories of working on the old jeep and rusted torx and stripping the shit outta them and needing to use easy-outs. Not fun!! LOL. I think we took out every torx screw and replaced them with hexheads.

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post #27 of 31 (permalink) Old 04-23-2017, 11:22 AM
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Now I gotta go, I'm shopping for a Prius pick up.
Bahahaha...god help us all! LOL


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post #28 of 31 (permalink) Old 04-23-2017, 12:16 PM
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Bahahaha...god help us all! LOL

LOL...2 door ridgeline "truck" LOL...

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Method Grid Wheels -Special Thanks to JT@Bajakits with stainless beadlock bolts
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post #29 of 31 (permalink) Old 04-23-2017, 04:01 PM
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On the diesel at least I'd say the air dam has very little impact on mileage. Given that the second trip had just a little more highway and a little less city it's possible the mileage was hurt a little but I doubt it was even 1 mpg.
I wondered if the diesel, being heavier and 'torquier', would see less of an impact with the removal of this air dam, which I intend to do when my truck is finally built/delivered.

Heavier: Less 'nose rise' at highway speed compared to gas, so less wind-scooping.

Torquier: Small resistance variances from wind buffeting would be absorbed better, meaning less rev to compensate = less fuel needed to maintain speed compared to the gas versions.

This is totally a theory, and I could be completely wrong, but...

I am also toying with the idea of simply trimming a couple inches as opposed to removing the whole thing. The way I see it, letting it hang a bit near wheels, as an above poster mentioned, may provide a bit of a wind break, now without the clearance issues. The only thing is you also then get rid of that lip at the bottom, which I'm sure acts as a mini spoiler to the spoiler. If cut, it would be flush at the edge. Of course, this could also now make it act as a wind FUNNEL, thus amplifying wind resistance...

I really could care less how it looks, it's the fact that it takes an off-road vehicle and makes it no more capable than a minivan with it on.

Last edited by ChaosTheory; 04-23-2017 at 04:10 PM.
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post #30 of 31 (permalink) Old 04-23-2017, 04:07 PM
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Bahahaha...god help us all! LOL

"200 pounds of raw, hauling power." (said in deep, manly commercial voice)
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post #31 of 31 (permalink) Old 04-24-2017, 12:19 AM
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Originally Posted by ChaosTheory View Post
I wondered if the diesel, being heavier and 'torquier', would see less of an impact with the removal of this air dam, which I intend to do when my truck is finally built/delivered.

Heavier: Less 'nose rise' at highway speed compared to gas, so less wind-scooping.

Torquier: Small resistance variances from wind buffeting would be absorbed better, meaning less rev to compensate = less fuel needed to maintain speed compared to the gas versions.

This is totally a theory, and I could be completely wrong, but...
I had the exact same thought, it'd be interesting to see some gas model comparisons. I've also seen comments about the truck feeling less planted at highway speeds without the dam, I felt absolutely no difference on mine. Again, diesel vs. gas? Colorado vs. Canyon? I think there may be too many variables to make a blanket statement about the effect of removing it.
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