great project and great pics!
I have a 2008 Cayenne Turbo and I've been spending all saturday now to find out IF and HOW it's possible to change my PCM2.1 with Bose to a nice aftermarket system.
I now realize that the magic word is MOST HUR and that this box will solve all problems with MOST' compatibility problems. Is that correct?
If so, I picture the whole thing as follows: the cables of the PCM have to get connected to the MOST HUR, then cables from the MOST HUR get connected to the new HU. Is that all? It sounds (almost too) so easy!
Last question: how about the butto