Yes, there are many things you can do to optimize performance on your 300SD. Start with the Search feature and dive into ALDA, aneroid compensator, turbo adjustments, and boost pressure. That will give you tremendous amounts of information on making your car perform like it was designed to perform. Now it may not perform like V-8 Otto cycle but then again its an S class, full size, luxury Benz! What more do you need!!