the potential advantage is reduced heat right? or just cosmetic? I have mine on. I would consider taking it off if it does in fact do something to reduce heat. Otherwise, I think it looks better on than off on a stock setup.
My brother did this on both his Hemi Durango and Challenger. He said they hold heat in. I told him he's full of it! lol
The Mach 1 and GT350 had no cover .
Give me some proof and I'll remove it,