How to make car sound better?

Hi all,



I have a 2013 328i M Sport almost fully loaded (MSRP 55,300).



I'm asking around to see if it's possible to get Active Sound on my car. If not, is there an alternative to Active Sound that can make my engine sound better? I heard MPPK can make the engine sound better but I think that's only for 35i's.



I already have M Performance exhaust but that just makes my car sound better from the outside...



Thanks.