MSD 6520 Digital 6-Plus Ignition Control

Includes a built-in 2 step rev-limiter and one stage of retard and start retard.; The MSD Digital-6 Plus Ignition Control combines terrific power, digital accuracy and great accessories making it ideal for street/strip applications. Every spark of the Digital-6 Plus Ignition is packed with 135 millijoules of spark energy and 535 primary volts. For NOS equipped cars, the Digital-6 Plus offers a step retard that will retard the timing when the NOS is activated. There is also a 2-step rev limiter for holeshot consistency and overrev protection. The Digital-6 Plus accepts points, amplifier, and mag pickup inputs and will run on 4, 6 or 8 cylinder engines.;

Switch between two rev limits that adjust with rotary switches in 100 rpm increments. Single stage retard for nitrous and top end performance. Start retard eases pressure on the starter, flywheel and engine. Adjustable magnetic pickup compensation produces accurate trigger signals. LED display warns of trigger signal problems or faulty charging system.