The CDI primarily serves to control the engine's ignition process. It generates the electrical spark needed to ignite the air-fuel mixture in the engine cylinder at the precise moment and also controls ignition timing. A well-maintained CDI can last for many years, even the entire lifespan of the motorcycle. However, it is important to maintain it properly and prevent damage from impacts and electrical overloads. The power of the motorcycle's CDI is like the inner force that drives us to conquer every curve.