Module Ignitor II VW CastCarb Approved D-57-22 FEATURES:Adaptive dwell maintains peak energy throughout the entire RPM range, reducing misfires while improving engine performanceDevelops 4 times more available energy between 3000 and 5000 RPM, and 2 times more available plug voltageCompensates for inherent electronic delay by adjusting the spark timing throughout the entire RPM rangeSynchronized peak current and spark timing, reduces heat build-upSenses startup and develops more energy for quicker, easier startingBuilt-in reverse polarity and over-current protection shuts the system down, preventing component damageLegal in all 50 states and Canada.