Swapping to a coil-on-plug ignition set-up can eliminate dwell time issues that can be problematic in stock ignition systems, and AEM's Ignition Coil Drivers are the most affordable way to drive coils in a coil on plug set-up. AEM's Ignition Coil Drivers are designed for driving high-power, dwell-controlled two-wire ("dumb") coils commonly found on performance engines. Our Three- and Four-Channel igniter coil versions can be used as a replacement for a stock coil driver or when converting to coil-on-plug in engines that do not need the extra spark energy from a CDI, or do not have the mounting space for a CDI like on ATVs, snowmobiles, motorcycles, and other Powersports applications.