How do you make your California 150cc scooter faster?

To make your California 150cc scooter faster, you can start by upgrading the exhaust system for better airflow, which can improve performance. Additionally, consider tuning the carburetor for optimal fuel mixture and replacing the stock variator with a performance one to enhance acceleration. Finally, ensure your scooter is well-maintained, with proper tire pressure and a clean air filter, as these can also impact speed.