If you're looking to increase the speed of your gas Club Car golf cart, there are a few things you can do. First, make sure the tires are properly inflated. This will help the cart roll more easily and quickly. Secondly, check the engine oil level and add more if needed. A well-oiled engine will run more smoothly and efficiently. Finally, clean or replace the air filter. A dirty air filter can restrict airflow and lead to decreased performance.