Brand new MSD DIS-4 Plus Ignition System, still in box with loom and all instructions.
For full bred drag race engines running high boost pressures from turbos, blowers or nitrous this unit is a Higher Output version of the DIS Ignition Control. The DIS-4 Plus HO Ignition produces an incredible 170 millijoules of spark energy with 470 primary volts. This increased output will light up fuel mixtures even under extreme cylinder pressures.
