Chevrolet Digital E-Curve Distributor Set The Timing Curve With A Twist Of A Rotary Dial MSD IgnitionThese adjustments are possible due to an advanced digitally controlled ignition module. Not only does the module offer these adjustable options, it also produces a hearty jolt of energy to the coil to produce a powerful spark to fire up your engine's performance. Also, a magnetic pick up is used for reliable and accurate trigger signals throughout the entire rpm range of your engine. The E Curve Distributor is topped with MSD's Rynite molded cap and