Inspector71

I had a red 2009 and never messed with it. After foolishly letting it go, I have a 2015. hooray. Anyway, I was wondering, does the addition of the Nismo exhaust system add anything hp and performance wise to the base 6 spd model? I'm guessing the aftermarket system so many like on the forum will be the better and cheaper route. Does it offer anything over stock? Thanks for the help and patience.