For drag racers, the MSD 7AL-2 has long been the standard ignition due to its reliability and power. By combining the 7AL-2's high performance with the proven digital technology from the Digital-6 Plus Ignition, MSD once again raised the performance ignition standards by introducing the Digital-7 Plus Ignition Control. State-of-the-art technology allows the 7 Plus to produce more power while using the same amount of current. The CD circuits combined with an IGBT Coil driver deliver 520 - 535 volts to the primary side of the coil with up to 190 millijoules of energy at any rpm. Below 3,300 there is of course MSD's powerful series of multiple sparks, rather than a single spark. This spark series burns in the cylinder for over 20