MSD designed this 7762 Power Grid Boost Retard Module for use with their Power Grid controller. This module allows you to retard the ignition timing in relation to boost pressure. In addition, it contains an output wire that activates another device based on boost pressure as well as an overboost shut-down feature that will shut off the ignition if boost exceeds overboost target. The software provides a timing map that allows you to program a timing curve based on the built-in 3-BAR sensor. MSD 7762 Power Grid Boost Retard Module Features: Adjustable: Yes Adjustment Style: PC Controller Activation: Boost Reference Ignition Box Required: Yes Controls Ignition Advance: No Controls Ignition Retard: Yes Stages of Ignition Retard: 6 Compatible with Multiple Coil Ignitions: 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.