I know there was at least one other post on a similar subject, but I was wondering about the computer(s) in the car. Is there more than one computer? I had a Mercedes and for no reason, the "bring car to dealer" message came up, I took it in and they said, you had such and such an error on such and such a date at this many miles.... Is there something on the 997 that keeps track of this sort of thing?
I saw on ebay, a guy selling software to read the error codes and a few other things, as well as reset the CEL light and ? Which comes with the cable which I guess plugs into somewhere under the drivers side. http://www.durametric.com/porscheecuinformation.aspx ... Is this reading off the same computer (ECU) that they use to re-program for more performance but is just limited on availability of the features to do performance upgrades?
And I have heard of people turning back miles, even on newer cars... If someone was able to do that, is there a way that the dealer can run some kind of software on the computer and find out if the mileage had been turned back? (would be a good thing to know for a used car purchase)...