MSD has combined race-winning experience with leading-edge technology to offer these incredible Digital-6 Plus ignitions. The 15 MHz micro-controller can analyze up to 15,000,000 critical instructions per second! That's over three times faster than comparable ignitions. Every spark is packed with 135 millijoules of spark energy and 535 V of power. Built-in features on the MSD Digital-6 Plus ignition include two rotary switch adjustable rev limiters, a single-stage timing retard, a start-up timing retard, an LED fault display, EMI protection, and much more! You get complete combustion for greater power, quicker throttle response, smoother idling, and quicker starts. You always get more power with less current draw.