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Removed Lower Air Dam

CptMorgan

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VMax2007 Senior Enthusiast

VMax2007

Posted
Posted
Honestly?

 

I think you are the only one that will notice it. Subtle changes escape most people but they add up to make a big difference in the overall look. With aerodynamics of a brick, I doubt you see a drop in MPG.

 

+1

 

I had mine off for the past year, but put it back on a few weeks ago. Too many other variables (season change, winter gas, etc) to be able to say whether it made a difference in mileage, but I would guess it's in the neighborhood of .1-.2 MPG at freeway speeds.

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tobias Senior Enthusiast

tobias

Posted
Posted
I'm going to go against the grain. While it doesn't look bad, I think the GMT900s look strange without the lower valance. :D

 

But if you like it, then that's all that matters. :lol:

 

I'm with you on this one. I had mine off for about 3 days. It just looks odd.

LawmanSS Senior Enthusiast

LawmanSS

Posted
Posted
It looks great man I cannot wait to take mine off! Does it just bolt on or have those cheap ass snap rivits or however you spell it?

 

It has two bolts...one at each end...and tabs that snap into slots.

2000DV4.8 Senior Enthusiast

2000DV4.8

Posted
Posted
I'm going to go against the grain. While it doesn't look bad, I think the GMT900s look strange without the lower valance. :D

 

But if you like it, then that's all that matters. :lol:

 

I'm with you on this one. I had mine off for about 3 days. It just looks odd.

 

 

I agree with you on the GMC front ends, it flows with the bumper, but on the Chevys it looks out of place to me. :fume:

bubba33 Enthusiast

bubba33

Posted
Posted
Honestly?

 

I think you are the only one that will notice it. Subtle changes escape most people but they add up to make a big difference in the overall look. With aerodynamics of a brick, I doubt you see a drop in MPG.

 

+1

 

I had mine off for the past year, but put it back on a few weeks ago. Too many other variables (season change, winter gas, etc) to be able to say whether it made a difference in mileage, but I would guess it's in the neighborhood of .1-.2 MPG at freeway speeds.

 

 

So why did you put it back on?

Sierra in the Sand Enthusiast

Sierra in the Sand

Posted
Posted

I doubt it's about mileage. I believe it's about cooling, especially in the summer when you're hauling a trailer. It increases the differential pressure front to rear of the radiators, forcing more air through. A friend of mine took one off his Suburban, and overheated climbing a steep. long mountain.......

VMax2007 Senior Enthusiast

VMax2007

Posted
Posted
Honestly?

 

I think you are the only one that will notice it. Subtle changes escape most people but they add up to make a big difference in the overall look. With aerodynamics of a brick, I doubt you see a drop in MPG.

 

+1

 

I had mine off for the past year, but put it back on a few weeks ago. Too many other variables (season change, winter gas, etc) to be able to say whether it made a difference in mileage, but I would guess it's in the neighborhood of .1-.2 MPG at freeway speeds.

 

 

So why did you put it back on?

 

 

I don't know...because it was lying there on my shelf in the garage? :lol:

 

 

:D

Matt_ Senior Enthusiast

Matt_

Posted
Posted

It doesn't have an effect on airflow through the rad at all. If that was its purpose, it would be negated by the oem skid plate and the shrouding.

 

Its addition helps decrease the drag coefficient, period.

VMax2007 Senior Enthusiast

VMax2007

Posted
Posted
It doesn't have an effect on airflow through the rad at all. If that was its purpose, it would be negated by the oem skid plate and the shrouding.

 

Its addition helps decrease the drag coefficient, period.

 

+1

 

I believe it reduces the turbulent flow of air under the vehicle.

Matt_ Senior Enthusiast

Matt_

Posted
Posted
It doesn't have an effect on airflow through the rad at all. If that was its purpose, it would be negated by the oem skid plate and the shrouding.

 

Its addition helps decrease the drag coefficient, period.

 

+1

 

I believe it reduces the turbulent flow of air under the vehicle.

 

 

That's exactly what it does (and that's how the drag coefficient is decreased)

VMax2007 Senior Enthusiast

VMax2007

Posted
Posted
It doesn't have an effect on airflow through the rad at all. If that was its purpose, it would be negated by the oem skid plate and the shrouding.

 

Its addition helps decrease the drag coefficient, period.

 

+1

 

I believe it reduces the turbulent flow of air under the vehicle.

 

 

That's exactly what it does

 

 

 

Laminar airflow FTW! :lol:

tobias Senior Enthusiast

tobias

Posted
Posted
It doesn't have an effect on airflow through the rad at all. If that was its purpose, it would be negated by the oem skid plate and the shrouding.

 

Its addition helps decrease the drag coefficient, period.

 

+1

 

I believe it reduces the turbulent flow of air under the vehicle.

 

 

That's exactly what it does

 

 

 

Laminar airflow FTW! :D

 

 

WRONG!!! :lol:

 

It's there specifically to create a vacuum under the truck thereby sucking air up and through the rear wheel wells to cool the inferior rear disc brake setups. They install them on all of the trucks though to keep the exterior aesthetics as similar as possible. :fume:

VMax2007 Senior Enthusiast

VMax2007

Posted
Posted
WRONG!!! :lol:

 

It's there specifically to create a vacuum under the truck thereby sucking air up and through the rear wheel wells to cool the inferior rear disc brake setups. They install them on all of the trucks though to keep the exterior aesthetics as similar as possible. :D

 

Congrats! You have won the LPOTD award...here is your prize:

 

force_lame.gif

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