Differences Between MSD 6 Series Ignition Control Boxes Performance System

Differences Between MSD 6Series Ignition Control Boxes Performance System Digital 6A: Base model with multiple sparking, capacitive discharge (CD) ignition control. Hotter Spark for Improved Driveability Without Rev Limiter Can Not Be Added Digital 6AL: Digital 6AL or 6BTM Ignitions are made for spirited driving, grabbing gears or some form of racing. Includes Adjustable Soft Touch Rev Control Can Add a 2Step Module Selector for Launch rpm Limit Digital 6AL2: Ideal for the street and strip applications. Includes Builtin 2Step Rev Control Digital 6 Plus: Ideal for 4, 6 and 8cylinder engine applications. Includes Builtin Drag Race Features, 2Step Rev Control, Single Stage Retard and Start Retard Programmable 6AL2: Provides PC programming for the street. Extreme Duty 6ALN: For severe duty applications such as offroad truck racing or saturday night dirt tracks, Sealed locking connectors and epoxy for vibration resis