I was told by my dealership that they are functional and that is part of the reason the spoiler is a rear lip this year instead of the ginormous spoiler on Nismos in years past. But then again, the majority of things that come out of a salesperson's mouth are made up facts and figures
I would not be surprised if the front is not functional though. It looks as though they took the footprint of the daytime running lights from 2014 and had to put something there, so they just cut a hole out.