Change engine sound when you switch engine suppliers. I guess the best way would be just changing the base games audio for that car. Then just play career mode like normal, and change the game files whenever you do change suppliers. Changing to Red Bull on Aston martin from Merc for example is not as fun.... the engine sounds like the merc still. So for example when you change to whatever new engine you take the sound of the manufacturer? I will pay for this if someone can help me get this