Just curious to know if it does anything and can or should you feel any dynamic driving differences? I only ask as I was kinda expecting the same change in driving dynamics like is felt in our E89......but to my disappointment the Coupe doesn't feel any different that I can tell. I'd assumed like the E89 I'd fell a noticeable difference in power from the engine..... 
and re evaluate things, As I previously said, the E89 feels like it's just been given an extra 50 bhp especially when pushed on an overtake, it's not just a more responsive response, you are definitely pushed back more in the seat.......