Pertronix 91542 Ignitor II Adaptive Dwell Control for Prestolite 4 Cylinder<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Adaptive dwell maintains peak energy throughout the entire RPM range， reducing misfires while improving engine performance</li><li>Develops on average 4 times more available energy between 3000 and 5000 RPM， and 2 times more available plug voltage</li><li>Compensates for inherent electronic delay by adjusting the spark timing throughout the entire RPM range</li><li>Synchronized peak current and spark timing reduces heat build-up</li><li>Senses startup and develops more energy for quicker， easier starting</li></ul></div><img src="http://ecx.images-amazon.com/images/I/313WjeX3leL.jpg" noproxy>