How do you add horsepower to a vstar 650?

To add horsepower to a VStar 650, consider upgrading the exhaust system to a performance model, which can improve airflow and reduce back pressure. Installing a high-flow air intake can also enhance the engine's ability to breathe, increasing power. Additionally, re-mapping or tuning the ECU can optimize the fuel-to-air ratio for better performance. Finally, consider upgrading the carburetors or adding a performance chip for further improvements.