Exhaust sound

[Damon159]

I own a 2009 328xi and I recently got a nice cat back muffler. It has a nice deep sounding tone to it, but I still want something louder. So far I have only changed the muffler, I was wonder some suggestions on other things I can do to my car to make it louder.

Thanks

[MassiveWalrus]

You can get a 2 chamber Catback. IIRC Most aftermarket Catbacks for BMWs are 3 chamber.