What kind of ignition system is typically used in performance engines for better efficiency?

The distributor-less ignition system (DIS) is commonly used in performance engines primarily due to its ability to improve efficiency and performance. One of the key advantages of DIS is that it eliminates the need for a traditional distributor. This allows for more precise timing of the ignition spark, which is critical for optimizing engine performance.

By using multiple coils that are triggered directly by the engine control unit (ECU), DIS can provide a more consistent and reliable spark across all cylinders. This results in improved combustion efficiency, which is crucial for performance engines that are designed to operate at higher RPMs and under more demanding conditions. The ability to control ignition timing with greater accuracy also allows for more advanced tuning options, enhancing both power output and fuel efficiency.

In contrast, traditional ignition systems such as mechanical points ignition and conventional distributor systems can introduce challenges like timing inaccuracies, increased wear, and maintenance issues, making them less suitable for high-performance applications where peak efficiency is essential.