This is a "smart coil" for applications that do not have an igniter. This coil offers the high spark energy and voltage typical of a CDI ignition system, but delivers a long spark duration that can only be achieved using inductive coils. The coil itself is constructed to operate in harsh environments and is shock and weatherproof, allowing it to be mounted virtually anywhere. This output coil with built in igniter is a specially designed inductive style, high energy coil for ignition systems that are not equipped with an igniter. AEM's High Output Coil takes advantage of the inherent benefits of inductive coil technology and will deliver a much longer duration of spark than is possible with CDI systems. This increased spark energy and duration is critical to maximizing power in high boost or high compression applications.