01 330iT 6MT, 98 M Roadster
I'm curious why you want to stay 100% factory. Are you familiar with the Dynavin N6? It does everything the factory nav does and more and it does it better. The sound quality is a noticeable improvement over the factory radio. It looks OEM and is very easy to install. It is designed to be a nav/radio as opposed to more of a tablet based system. As such it has it's own proprietary operating system instead of Android. That makes it far more reliable. Things just work.I'm lurking on this thread for now. I've got an 04' 6 speed smg with 46K on the clock and I want to have bluetooth for music and phone but I want it to be fully factory not aftermarket. You obviously know your stuff, so thanks for the killer write ups and info!
If you don't have factory nav already, I think you'll be happier with the N6. At least look into it. J&T Distributing is a forum sponsor and they sell the N6. Jeff is pretty quick to help with any necessary troubleshooting.
I have only one complaint about mine and that is the main menu interface. It has a Win8 look that I don't like and have been very vocal about. You don't spend much time on the main menu, but more muted colors would be more befitting a premium car IMHO.