There has been a good bit of talk about it over the years
Some say it does nothing
I lost mine a couple of years ago and saw my temps go up
Then again ... I live in Texas
Grady
For you folks in hot climates with no air dam, I'm curious what temps you see without the air dam (I think our definition of what's 'hot' is a point of ambiguity).
For instance, I consider anything over 195*F to be getting warm (whereas I feel other folks don't sweat even 230*F). I'd be surprised if someone can run through triple-digit ambient-heat and keep the car at 195*F without the air dam.
Think of it this way:
Ford made over 5000 SN95's.. They're charging us $12 for one, so let's say it's costing them $2 to make one [damn child labor]; that's $10,000 just for a little piece of plastic that some people call "useless". To Ford that's $10,000 lost. I doubt Ford would say "Hey, this doesn't do anything but lets spend $10,000 just to put a piece of useless plastic here".
Follow my drift? Companies wouldn't do that if it didn't serve a purpose. It'd be a loss on their part.
This is a FACT...WIth my XENON front chin on, the car runs hot at HIGHWAY speeds instead of cooling...the chin hangs lower than the deflector. With the chin off the car runs cooler since the deflector is exposed...You need it in hot weather.
RC
For instance, I consider anything over 195*F to be getting warm (whereas I feel other folks don't sweat even 230*F). I'd be surprised if someone can run through triple-digit ambient-heat and keep the car at 195*F without the air dam.