No, I never had logic 7 install. I had a base stereo setup. I have just temporarily upgraded the underseat subs and door mids to the L7 speakers. My plan is to actually get some Focal 100KRS components and 8" mid-bass (Jenherts) and run them of a 5 channel amp. I will use the 5 channel for 10" sub in the boot.
Mods so far: 20" LM reps, Eibach Sportline, LCI tail-lights, LED H8 angel eyes, black grille, Black BMW badges, CIC/Combox/Bluetooth/6FL/6NF/6NR retrofit, rear headset monitors and PS2.
Awaiting iPhone 5 music/media snap-in adapter.