DRL-400 Universal KitThe Dynatek DRL 400 is a 2 stage rev limiter used for drag racing applications. Offering 2 independentrev limiters for launch and high side engine over rev protection the DRL 400 is a versatile rev limiter. The DRL 400 is designed for use with 2 coil systems and is perfectly compatible with the Dyna S and Dyna 2000 ignition systems. It is not compatible with coil on plug systems.