In an 03-04 it will just work without coding or anything, at least mine did. I put in an ebay PCM 2 in place of my CDR 23. You would have to get the NAV antenna and discs to make that work, but I wouldn't bother as the Porsche navigation from those years wasn't very good to begin with and they don't/haven't upgraded the maps in years. I went thru the trouble and wasn't happy with the nav funtion. I like it better visually than the CDR 23 and it seems to have a little better sound(maybe my imagination) so I keep it in.
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2004 986 Basalt Black Metallic. L&N IMS Retrofit, 996 Door Cards, Smarttop, Aerokit II bumper and sideskirts, Toth ducktail
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