Technic, further to this last post of yours, if I replace my 08 e90 L7 headunit with a 2010 MY2010 OEM HU which has the sirius and hd logos on the outside labels, see below:
(
http://cgi.ebay.com/ebaymotors/10-20...fAudioQ5fVideo)
it should be all that's needed to have HD and Sirius ready? Assume it needs recoding at the dealer, but nothing else, such as trunk sirius module, etc? Can this recoding be done by the Audiologic tool too?