I don't know if your car's cc has anything to do with the vacuum system or not? I know that my 300D cc is not tied into the vacuum system. Anyway, my guess is that you will need to replace the "electronic" part of your cc (the part located underneath the drivers side dash). You are probably looking at couple hundred bucks (US). If I were you I would at least call Peter and discuss the options.
good luck

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Jim