I left mine on and simply measured carefully and cut the needed slots so i could mount mine. Leave it on or take it off, either way will work
Administrator
I used a roto zip, but a dremel would work just fine as well. The lower dam is supposed to direct air flow up to the radiator for optimum cooling and as such, I'd be hesitant to remove it even though many have with no reported problem.
Grand Champion
for those who have removed them how much do you want for it mines got a rash on it from previous owner and i was looking to get a new one but ill take a used one if the price is right but it has to be in great condition mines just been dinged a very lil and really no need to change it im just ****....you can see it in my sig to the left of the bucs tag....
Record Breaker
I don't believe that air dam is for cooling....its for aerodynamics. I have had mine off for about a year, and I live in hot-a$$ Houston, TX baby! No cooling issues whatsoever, which leads me to my opinion!! LOL 
Administrator
I quote Lawrence M. Cooper, lead engineer at Fairchild and author of The Handbook of Data Envelopment Analysis and along with Professor of Aerodynamics at The University of Michigan, Lawrence M. Sieford, co-authored The White Papers of Aerodynamics & Cooling:
"An air dam has great benefits. First, it prevents air from compressing under the nose of the car which stops that high pressure area that results in front end lifting and lower grip. Second, it also prevents air from interfering with the undercarriage which causes drag.Third, it funnels air into the radiator improving cooling. This funneled air is also used to cool oil , brakes, and even be fed into the intake system on some vehicles."
"An air dam has great benefits. First, it prevents air from compressing under the nose of the car which stops that high pressure area that results in front end lifting and lower grip. Second, it also prevents air from interfering with the undercarriage which causes drag.Third, it funnels air into the radiator improving cooling. This funneled air is also used to cool oil , brakes, and even be fed into the intake system on some vehicles."
Record Breaker
Quote:
"An air dam has great benefits. First, it prevents air from compressing under the nose of the car which stops that high pressure area that results in front end lifting and lower grip. Second, it also prevents air from interfering with the undercarriage which causes drag.Third, it funnels air into the radiator improving cooling. This funneled air is also used to cool oil , brakes, and even be fed into the intake system on some vehicles."
this would be great for a race car. but a brick shaped truck is a tad different and any benefit IMO would be un-measurableOriginally Posted by HammerZ71
I quote Lawrence M. Cooper, lead engineer at Fairchild and author of The Handbook of Data Envelopment Analysis and along with Professor of Aerodynamics at The University of Michigan, Lawrence M. Sieford, co-authored The White Papers of Aerodynamics & Cooling:"An air dam has great benefits. First, it prevents air from compressing under the nose of the car which stops that high pressure area that results in front end lifting and lower grip. Second, it also prevents air from interfering with the undercarriage which causes drag.Third, it funnels air into the radiator improving cooling. This funneled air is also used to cool oil , brakes, and even be fed into the intake system on some vehicles."
Administrator
Yeah granted, but my point in posting that quote is that there is a reason for it being there, they would not spend money on a component that has NO use and Ive stated that I know a few guys who have removed theirs and do not overheat.
I just dont know that I would take it off unless it was absolutely necessary for the installation of a component...
I just dont know that I would take it off unless it was absolutely necessary for the installation of a component...