Loren the Admin at Renntech.org is pretty good about cracking radio codes. Also I've called a Porsche dealer, provided the VIN for my Boxster, and was given my radio code in exchange. I called the dealer that originally sold my Boxster. I don't kno if that step was necessary or not.
I have yet to upgrade from 3 to 4 stalks on my Boxster so I cannot comment on that mod. GL
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