Originally Posted by VFS
Thanks for this post and suggestions.
Would you take these components to the dealer to have them code and install it?
As stated above, this suggestion does not require coding. You need an audio shop to install all that, not a dealer.
What would happen if you just did the amp and subwoofers?
Sound will suck slightly less.
Install shop will determine that.
What could you use if you didn't want to top mount speakers?
Those M341 are 46mm
deep, they will fit your E90 front door panels with mounting adapters from the back
of the OEM grills.
-2015 F30 320i, Imperial/Oyster, 8AT, ED
-2012 E92 M3 Jerez Black/Rust Brown, M-DCT, ED: Gone
-2008 E90 M3 Melbourne Red/Bamboo, 6MT: Gone
-2007 MK5 GTI United Grey/Grey, DSG: Gone
-2004 E46 M3 Carbon Black/Cinnamon, 6MT: Gone