2003 DSP Amp issue
I was wondering if I purchased a used DSP amp from an X3 (listed as exchangeable), would I have to have it coded for the e85 cabin?
Also, headunits are interchangeable, correct? I picked up a 2006 unit and it seems to be working, but I wanted to double check I don't need to code the headunit to work with the older amp, etc.
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