Why do you guys care about the fake tips?! Have you seen the passenger side of your hood lately (ie the fake vent)?
IMO the extra tips are just styling elements like lots of other stuff on the car, and if engineering dictated one tip, and obviously one tip would look more stupid than two, what did you expect them to do? Perhaps do a 1 into 2 pipe coming out of the muffler? Thats just as lame. Hell, at least you only have to clean one top this way.
+1 dinan.