BMWretrofit is saying that they can get 6NR working on cars with combox retrofit.
I don't have (and am not adding) Idrive/CIC; I am just looking for Bluetooth HFP+A2DP, and Iphone integration (currently neither).
What part do I need
Combox for GPS
FS:Sub Amp - works w/ Technic harness! MRD-M300 - cheap