I did not opt for the DSP option in my Avant-4 since I already have factory DSP but AVIN tells you to put all the standard EQ settings in the Avant-4 to flat and make any sound tuning and adjustments in the DSP settings in the iBus app.

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• 2004 E53 X5 3.0 ZSP (4/04 build date) Jet Black exterior/Sand Beige interior
• 2002 E46 325i ZPP (2/02 build date) Alpine White exterior/Hell Beige interior

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