It provides four different stages of retard along with an adjustable start retard feature - all of this with no modules! The MSD Multi-Retard uses a high speed RISC microcontroller to direct the timing functions. This controller can make extremely quick compensations to the timing while maintaining accuracy to within 1 deg. There is also an innovative Magnetic Pick-Up Compensation circuit built in to allow for rock-steady timing with a variety of different mag pick-ups. There are four separate retard stages that can be activated independently or together for a total sum of retards. Each stage is adj from 0 deg - 9 deg and a max of 20 deg of retard can be pulled out. On top of these great features, there is also an optional start retard circuit that can be programmed to retard the timing 5 deg, 10 deg, 15 deg or 20 deg during cranking. The Digital Multi-Retard can be used on 4, 6 or 8-cyl engines and must be used with an Ignition Control.