Hi,
I have the PP82DSP with IFBMW-Sub and i'm quite happy with them.
I'm not very good at in depth reviews, all I can say is they perform consistently, provide a nice, rather neutral bass, and you can feel the bass rather strongly in the seats :-)
For F30 make sure you get the IFBMW-Sub V2 which comes with spacers to fit in the F30 enclosures which are shallower than the E90.
Happy to answer any question you may have.
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2017 M550i | Sophistograu
Previous cars: 2014 F30 ActiveHybrid 3 | 2012 f20 M135i
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