Or, more? I found this:MULTIPLE SPARK Under low RPM cranking conditions, the HI-6 generates up to 12 sparks. This assures quick starting even under the most adverse conditions. At idle and cruise, the number of sparks fired is adjusted to maintain a total spark duration of approximately 20 degrees (crankshaft), assuring smooth idle, improved throttle response, and eliminating the lean surge characteristic of some late model emission controlled vehicles. Above 3,000 RPM, the HI-6 generates a single powerful spark with many times the spark gap current of most competitive systems.