I'm currently awaiting delivery of my G30 540i xdrive. I really want the ppsk as I feel the standard exhaust is a bit "unenthusiastic", but want to make sure that it's still not too intrusive as a daily driver if in comfort mode. I don't believe the G30 MPE is a valved system like some of the other exhausts, but is there a notable change in tone from comfort to sport/sport+? Unfortunately, I haven't been able to find any good videos or sound clips...
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