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Power Grid 4-Bar Boost Controller Up to 43.5 PSI
Product Discontinued
MSD IGNITIONPART NUMBER: 121-7763

Power Grid 4-Bar Boost Controller Up to 43.5 PSI

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This product is no longer available. Please call customer service for assistance at 1-800-345-4545.

Accessory Modules
    Power Grid 4-Bar Boost Controller
  • Up to 43.5 PSI
  • For Use With Power Grid System

  • USB Connection For Ease Of Programming
  • Timing Based On Engine RPM And Gear Value
  • Advanced Individual Cylinder Timing
  • Five Retard Stages For Nitrous
  • Four Steps Of RPM Limits
  • Output Switch Set On RPM/Pressure/Time
  • Shift Light Settings For Each Gear
  • Ignition Data Acquisition Accepts Multiple Runs

    Note: Not legal for sale or use on pollution-controlled vehicles.

    The Ultimate in RPM and Timing Controls

    Take total control of your ignition system with the MSD Power Grid Ignition System, available at JEGS—a high-performance solution built for racers and serious enthusiasts who demand precision and consistency. The MSD Ignition Power Grid platform is engineered to deliver advanced spark control, real-time tuning, and integrated data logging, making it a must-have for anyone optimizing engine performance. Whether you’re building a competitive drag car or fine-tuning a street/strip machine, the MSD Power Grid Ignition System provides the accuracy and adjustability needed to unlock maximum horsepower and reliability.

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    Performance Benefits & Key Features

    The MSD Power Grid Ignition System is designed around capacitive discharge technology, delivering high-output spark energy for more efficient combustion and improved throttle response. With programmable timing curves, launch retard, boost timing control, and multiple rev limiters, this system allows users to dial in ignition settings for specific racing conditions. These performance ignition systems also feature advanced data logging capabilities, enabling racers to analyze run data and make informed tuning adjustments.

    Constructed with durable, heat-resistant components and compact housings, Power Grid units are built to withstand harsh racing environments. Key specifications often include high-voltage output, precise timing accuracy, and user-friendly software interfaces for seamless tuning. The result is more consistent passes, improved engine efficiency, and greater control over critical ignition parameters. Whether you're chasing quicker ETs or smoother power delivery, the Power Grid system delivers measurable performance gains.

    Fitment, Compatibility & Applications

    Designed for broad fitment and compatibility, the MSD Power Grid Ignition System integrates with a wide range of engine platforms, including GM LS, Ford modular, and Mopar performance engines. These ignition control units work with carbureted and fuel-injected setups and are compatible with crank triggers, distributors, and various ignition components. This flexibility makes them ideal for drag racing, street performance builds, and high-horsepower applications.

    The system is especially popular among racers who require precise ignition timing under boost or nitrous, as well as enthusiasts upgrading from traditional ignition modules. From classic muscle cars to modern performance vehicles and dedicated race builds, the Power Grid system supports diverse applications where reliability and control are critical. Its scalable design also allows users to expand functionality with additional modules and accessories.

    Backed by MSD’s reputation for engineering excellence and race-proven durability—and trusted by performance enthusiasts shopping at JEGS—the Power Grid Ignition System is a proven upgrade for serious builds. Explore the available options to find the right configuration for your setup and take your ignition performance to the next level.

Part TypeIgnition Control Module
Product LineMSD Power Grid Ignition System
BrandMSD IGNITION
Package Height3.0
Package Width6.5
Package Length6.5
Weight1.45 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part Number7763
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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