How do you increase engine power Yamaha xj600s from 50 to 61 HP?

To increase the engine power of a Yamaha XJ600S from 50 to 61 HP, you can start by upgrading the exhaust system for better airflow, which can enhance performance. Additionally, tuning the carburetors for optimal fuel-air mixture and installing a high-performance air filter can contribute to increased horsepower. Finally, considering a performance-oriented ECU remap or replacing the camshaft with a performance variant can further boost power output. Always ensure that modifications comply with local regulations and maintain engine reliability.