I've seen that -with inpa- you can switch loudness on and off (at least for the pre-fl roadster models). That is an option that is not found in the flipscreen menu structure I think.
Default setting on my roadster was off btw. Switching it on gave too much bass&treble with my eq settings, so I left it off. Maybe something to experiment with in the future.
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Z4 3.0i | ESS TS2+ supercharger | Quaife ATB LSD | Brembo/BMW performance BBK front/rear | Schrick FI cams | Schmiedmann headers+cats | Powerflex/strongflex PU bushings | Vibra-technics engine mounts | H&R anti rollbars | KW V3 coilovers/KW camber plates | Sachs race engineering clutch | tons of custom sh#t
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