The MSD 5520 Ignition Control Module is a high-performance digital ignition controller designed for precision timing control and increased spark energy. Featuring advanced microprocessor technology, this module delivers multiple sparks per combustion cycle up to 3,000 RPM for improved throttle response and efficiency. Built with heavy-duty components, it can withstand harsh engine bay conditions while providing consistent performance.

Technical Specifications:

• Operating Voltage: 12-18V DC
• Maximum Output Voltage: 460+ volts
• RPM Range: 0-12,500 RPM
• Multi-Spark Window: Up to 20° crankshaft rotation
• Current Draw: 1.2A per 1,000 RPM
• Operating Temperature: -40°F to +185°F (-40°C to +85°C)
• Maximum Spark Duration: 20 microseconds
• Built-in Rev Limiter: User adjustable
• Tach Output Signal: 12V square wave
• Input Triggers Compatible: Points, amplifier, magnetic pickup
• Housing Material: Cast aluminum
• Dimensions: 8"L x 4"W x 2.25"H

Key Information for Car Owners:

• Compatible with factory and aftermarket ignition systems
• Built-in capacitor discharge circuitry
• Automatic coil charging optimization
• LED diagnostic indicator for troubleshooting
• Moisture-resistant sealed construction
• Easy plug-and-play installation
• Built-in reverse polarity protection
• Vibration-resistant mounting system
• Made in USA with military-grade components
• 1-year manufacturer warranty

Performance Features:

• Multiple sparks below 3,000 RPM
• Increased spark energy at all RPMs
• Improved cold start performance
• Enhanced throttle response
• Built-in RPM limiting protection
• Compatible with nitrous and forced induction
• Automatic coil current control
• Advanced EMI/RFI suppression