I had my car towed by recovery due to warning message on dash saying *Limited performance* there was no management or warning light on the dash. Recovery firm didnt have the software to read the ECU. The engine dropped power and at the front of the engine on idle and acceleration there is a click every thirty seconds or so ...sounds plastic sort of noise not like a metallic noise ...the garage have said its likely the turbo but at a thousand pounds [ uk] its a expensive could be repair . There was no smoke and up to then ok...its got 91000 miles so not to bd for a saab. We no longer have saab dealers here in our area so any help would be great.