Pro 600 CDI High Output Ignition & Coil Kit

The MSD IGNITION Pro 600 CDI High Output Ignition & Coil Kit (MSD 80003-8HO) is a complete 8-channel ignition control module designed to replace factory systems with precision, high-output spark delivery. This kit includes everything needed for installation: the Pro 600 CDI ignition box, eight matching coils, and a complete harness—eliminating the need for sourcing compatible components separately. The system is engineered for Holley EFI integration, making it a straightforward fit for street and performance engines that rely on modern electronic fuel injection protocols.

The Pro 600 CDI delivers substantially higher spark energy output compared to stock ignition systems, improving combustion efficiency across the RPM range and supporting aggressive engine tuning. The 8-channel architecture allows independent control of each ignition coil, enabling precise spark timing adjustment for optimized performance under varying load conditions. This modular approach reduces voltage drop across long plug wires and minimizes the electrical noise that can interfere with engine sensors and data acquisition systems. The included coils are matched to the CDI box for consistent spark characteristics and reliable cold-start performance.

This kit is targeted at builders and enthusiasts upgrading carbureted or initially fuel-injected engines to Holley EFI platforms, as well as those performing engine rebuilds where factory ignition system reliability or output is inadequate. Street performance, bracket racing, and naturally aspirated engine builds benefit most from the high-output spark characteristics and programmable timing control. The complete kit format reduces installation time and eliminates compatibility guesswork—all components are pre-matched by MSD Engineering for plug-and-play functionality.

MSD has established itself in the performance ignition market by focusing on spark energy, dwell control, and integration with modern EFI systems. The Pro 600 CDI represents a proven platform used in thousands of upgraded engines. The black finish on the main module provides visual distinction and integrates cleanly into engine bays. Installation should be verified through the Holley EFI software to ensure proper mapping and sensor calibration before full engine operation.