In general, the exhaust gases are produced inside the chamber of the engine and then directed to the exhaust system with the help of an exhaust manifold gasket. Moreover, the oxygen sensors ensure that the amount of oxygen found in the exhaust gases. If the exhaust system has any problems in your Porsche, then it will produce lots of exhaust gases to the environment. The following slide defines the specific things related to the exhaust problems in your Porsche.