I bought a Saab 9-3 1.9TiD 88kw from my friend. From the very beginning there is a warning "Limited performance" but there is nothing wrong. The car goes without any problems, no issue at all. Diagnostic showed nothing. Car was 3x in Saab service on diagnostics, EGR was out and no one has an idea what can cause this. That friend told me, that somebody before him cut some wire because to hide some failure on spark plugs. Spark plugs was repaired. Could this be connected with the cutted wire? As I said diagnostic showed nothing at all and car is going without any issues. I tested it myself for 2 days. I want to solve this, but I'm run out of ideas.