To help drag racers achieve even more consistency, our engineers have incorporated an adjustable low rpm stage into a Three Step Module Selector! This allows you to make adjustments in 100 rpm increments from the driver's seat! The Launch Control Module features a shielded harness for increased protection against EMI so it can be mounted within easy reach of the driver. The Launch Control also features two other rpm limits one for top end over rev protection and another to use during the burnout to achieve consistent tire temperatures. These limits are adjustable with MSDs plug-in modules. No rpm modules are supplied.