Installed it on my 2008 328i E93 w/ CCC and Nav. At first I tried to get usb audio support by upgrading to the MULF2 module, but I never got that to work. Gave up and got the Dension Gateway instead. After a few hours figuring out how I wanted to wire it, I coded the car and started to enjoy my music. It's great! I can stream via bluetooth or USB off my iphone.
Have a 2006 MB with NTG-1 Command head. Has no BT or way to sync phone. The Denison 500S Dual BT with USB and MOST fiber optics works perfectly. Much better alternative to factory system which is out dated. For install, I found YouTube to be extremely helpful.