The Ignitor II senses current levels in the coil and adjust the dwell to maintain peak energy throughout the entire RPM range. Dwell time is increased or decreased with changing engine RPM and operating conditions. This provides more energy at high RPM?s reducing misfires while improving engine performance. compared to the original Ignitor developes an average 3 times more available energy between 3000 and 5000 RPM and nearly doubles available plug voltage.{specs}.