Hi Mikie
I have a gen2 2.9 Cayman PDK and I yesterday retrofitted the "sports chrono" system on it at the porsche dealership. It was basically a software modification and a new panel to give me the sports and sports plus buttons. Very simple. The dealer told me that he also upgraded a few other things while at it(also software modifications). When i got the car back and drove off, i got the "oil pressure monitoring defective" signal. I am contacting you because I though it sounded similar to your problem. Did you solve it/Konw where the problem lies?

I thank you in advance

Ektoras