Ignition Mode

Overview

Selects the ignition output strategy used by the engine. The selected ignition mode determines how ignition events are distributed across the available ignition output channels.

⚠️ Warning

The ECU Ignition Output provides a TTL-level trigger signal intended to control an external ignitor or a coil with an integrated ignitor module.

Do not connect the ECU Ignition Output directly to a coil negative terminal. Incorrect connection will result in damage to the ECU and/or ignition system.

Options

Mode Descriptions

Off

Disables all ignition outputs.

Direct Fire

Each cylinder is assigned its own dedicated ignition output channel.

Wasted Spark

Each ignition output fires two cylinders simultaneously, with one spark occurring on the compression stroke and the other on the exhaust stroke.

Distributor

Uses a single ignition output to drive a conventional distributor ignition system.

Twin Distributor

Uses two ignition outputs to drive a twin distributor ignition system.

Direct Fire + Direct Trailing Spark

Provides individual ignition outputs for both leading and trailing spark plugs. Commonly used on rotary engines requiring independent control of leading and trailing ignition events.

Wasted Spark + Direct Trailing Spark

Uses wasted spark ignition for the leading plugs while maintaining individual control of the trailing spark plugs.

CDI 8

Configures the ECU for operation with an external 8-channel Capacitive Discharge Ignition (CDI) system.

ℹ️ Note

• Ignition Channel 1 is the only ignition output available in Distributor mode.
• Ignition Channels 1 and 2 are the only ignition outputs available in Twin Distributor mode.
• For Direct Fire + Direct Trailing Spark and Wasted Spark + Direct Trailing Spark modes, a maximum of 6 trailing ignition channels are available.
• All other ignition modes provide fully configurable ignition channel assignments.

See Ignition Channel Setup for channel setup help.