BluejayBob

Yes, this is something I'll noodle on for awhile. Coming from my 5 Series, I feel like I doubled my power, so I'm good for awhile. Now if I can just figure out a way to improve the quality of that Bose audio system. That is one area the car falls short that bothers me--my 535 was a 2008, and that Logic 7 system had a lot more punch & clarity than this. I wonder if just upgrading the amp would do the trick? Can't find may Bose upgrade success stories on this board for some reason...

luv2sleep

I just added a powered sub (subwoofer & amp enclosed in box). It's a simple DIY since everything (battery, stock amp, stock sub) are in the trunk. You can also add an amp and sub (separately)-same concept.
I found that by turning down the bass in the speakers and having the bass come from a decent subwoofer/amp made a world of difference in sound quality. The Bose just does not put out that tight bass and now I have a sound system that I can live with. Checkout Amp & Subwoofer install in my S7 Bose - Video

BluejayBob

Thank you very much for this--I will check it out

hwj

Congrats! Beautiful car. Had I opted to order new instead of going with a CPO, mine would have been spec'd quite similarly.