I have just removed the air dam on my 2013 model because it stands a good chance of being ripped off. It is held on by 13 philips screws and two integral plastic tongues. To my surprise I found that there is an orifice leading into the engine compartment which was hidden by the air dam and protrudes below the lower engine cover. I cannot inspect it without removing this cover which I am not going to do yet, but I have a terrible suspicion that the main engine air intake is behind this orifice. Please tell me I am wrong and that no designer would be stupid enough to put a 4x4 air intake a few inches above puddle level. No wading for me!