I ended up not brining the laptop, it thought it would be weird thing to do, besides the car asking price is one of the cheapest (dutch) cars online minus money for the repair (2500 euro was quoted for the repairs) . What to me would not be worth the risk. I rather buy a non error code car. But I went to check the car regardless.
I did ask the seller about my plan to bring the laptop and he told me he was fine with that. He then offered me to bring the Porsche to his specialist (who he befriended and did the work on the car for the last 7 years) so i can see the Porsche on the bridge to really inspect the bottom of the car and talk with the specialist about the error codes and the work it would involve me to do.
We talked some more over coffee and seems like an honest good guy. I feel like he is just look for a good home for his car. I did take him up on his offer to go to the garage later and check it out. Also asked if he can in advance communicate the trown codes to me.
Perhaps a good time to get familiar with the codes regarding cams and what they implicate in terms of time/money.
Edit: found it
http://forums.pelicanparts.com/boxster-cayman-forum/596544-boxster-obd-ii-fault-code-listing.html
i would guess one of these
P1524 Camshaft Adjustment, Bank 2
P1530 Camshaft Adjustment, Bank 1
P1531 Camshaft Adjustment, Bank 1
P1539 Camshaft Adjustment, Bank 2
P1397 Camshaft Position Sensor 2 - Signal Implausible, Short to Ground, Short to B+
P0341 Camshaft Position Sensor 1 - Signal Implausible, Short to Ground, Short to B+
Threaded Mode
