The moment you use the performance pack and get on the bike u feel the difference. Downshift became smooth. Engine vibrations dropped significantly. Engine is smooth even post 7000rpm. The bike feels soo refined. There is also a increase in throttle response. Excellent product from liqui moly. Strongly recommend. Last but not least quick delivery from lrl motors. Thank you for a wonderful experience.! :-) **Disclaimer** Do not expect all the above if u have not maintained your engine properly or have any engine components already worn out or any other issues.