For smooth running: function and authenticity of the engine and transmission must be carefully checked. If necessary, they are completely disassembled and cleaned. Defective parts are replaced with genuine parts or parts that were replicated based on original drawings. The measurement values originally specified by the factory are used as the basis for the engine settings. The engine's performance is then measured during a test run on the test stand. The results are documented and displayed in a diagram. In this way, the engine and transmission are restored to their original state - both visually and technically. Porsche Classic offers customers the option of only restoring the engine and the transmission, so that their classic vehicle runs smoothly again.