MSD Boost Retard Module for Power Grid 421996 Provides Simple Adjustment To Two

Provides Simple Adjustment To Two Step Rev Limiter

2009-2013 Chevrolet Silverado & GMC Sierra 1500 trucks with the 5

12 in Diameter

Standard Motor Products SMP Dr-39

MSD Boost Retard Module for Power Grid 421996 Provides Simple Adjustment To TwoMSD Boost Retard Module for Power Grid 7762 Power Grid Boost Retard Module This Power Grid module does exactly as its name sugests; retards the ignition timing in relation to boost, pressure. It also has an output wire that can be used to activate another device based on boost pressure, as well as an overboost shut down feature that will shut the ignition off if boost exceeds the overboost target. Product Description: Ignition Control Module Power