its my son's car, he will be happy as shit with more "bass"
but I can see how DSP/AMP/Speakers can be a nice step up.
For our F22 228i I did experiment with upgraded
https://www.aliexpress.us/item/32568...2usa4itemAdaptB&W drivers, from Ali Express so I'm sure they are not genuine, but super high quality and sound did improve.