MSD designed this 8737 3-Step Module Selector to provide the ability to switch between two or three different rpm or degree modules. These different modules are activated when 12 volts are applied to the corresponding activation wire. The Selectors work with either a Soft Toch Rev Control as well as any MSD Timing Controller with a high speed retard module. Allows a launch rev limiter as well as a high speed rev limiter. MSD 8737 3-Step Launch Control Features: Requires the use of RPM Modules Includes Starting Line Rev Limiter: Yes Includes High End Rev Limiter: Yes Includes Burnout Rev Limiter: Yes Quantity: Sold Individually From street cruisers to Top Fuel dragsters, MSD's ignition systems have been the industry leader for over 40 years. MSD continues to push the envelope with cutting-edge ignition technology as well as intake manifolds and EFI systems.
