[Birdoprey]

I've tried searching and have found conflicting info(at least as far as i can tell). I have a 2013 X5 50i with M-Performance package(don't think that makes a difference). From what i've found the 50i's put out 400hp up to 2012 and from 2014 they put out 440hp. What about 2013? How can i tell?