LS Control 24X/1X And 58X/4X Crank/Cam LS Configurations MSD IgnitionThe LS Ignition controller includes a built in 2. 5 Bar MAP sensor that can be used with naturally aspirated or boosted applications. This allows for timing advance or retard based on the intake manifold pressure. As the popularity of GM LS engines continues to grow, so does the demand for a powerful, reliable, and easily adaptable ignition system. MSD has answered this demand with an updated and improved version of the popular 6LS box. Whether using