If you breath on your X5 and tell the dealer about it it will void your warranty. (just kidding of course) On the for real side the less you tell them about what you do to modify your X the better off you will be. I'm sure someone will provide you with the correct guidence.

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….