Pertronix 71385 Ignitor III for Chrysler 8 Cylinder Engine Multiple sparks thru the entire RPM range. Adjusts spark timing at higher RPMs to compensate for the inherent electronic delay. Integrated digital rev limiter with LED feedback for precise RPM setting. Memory safe function stores settings eliminating unintended changes to rev limit. Adaptive dwell maintains peak energy throughout the entire RPM range, reducing misfires while improving engine performance.