MegaJolt Lite Jr.

The Megajolt Lite Jr. (MJLJ) is a fully configurable, stand-alone ignition controller designed to control a Ford EDIS 4, 6 or 8 crank-fired ignition module. The result is a precision, digitally controlled distributorless ignition system.

The MJLJ is an ideal ignition solution for carburated engines; it can also work in conjunction with compatible EFI systems.

Features

Current Features

• 10 x 10 ignition map, with full linear interpolation between values
• Load axis calibrated by on-board Manifold Pressure (MAP) sensor or external Throttle Position Sensor (TPS)
• Four user-defined output switches, which trigger on RPM or load
• 'Shift light' output- for driving a dash-mounted shift light
• External Rev-Limit trigger output (The Ford EDIS module has no 'rev limit' signal, so an external circuit to disable the ignition coil is required)
• Modern, easy to use, and customizable Windows-based configuration software
  • Load, configure and save Ignition Configuration
  • View, log and interact with engine runtime data
  • Interactively visualize and tune ignition map

New with V2.7.x/V3.1.0 beta

• Dual, on-the-fly switchable ignition configuration
• TPS / Load axis calibration
• Improved user outputs with hysteresis
• Configurable cranking RPM advance

General Information and Downloads

• MJLJ design and architecture
• Frequently Asked Questions (FAQ)
• Ford EDIS technical information
• Configuration software
• 3rd-party software and contributions
• Troubleshooting the MegaJolt Lite Jr.

Current Hardware

Version 3.x

• Choosing between MAP or TPS
• Downloads
• Kit assembly guide
• Vehicle installation guide
• Version 3.1.0 beta upgrade guide

Older hardware revisions

Version 2.x

• Downloads
• Build and Installation guide
• Version 2.7.0 beta upgrade guide

Ancient History

• The never-released MJLJ Version 1 prototype