Saturated injectors, commonly referred to as high-impedance injectors, are the standard fuel delivery components for Honda OBD1 and newer engine management systems.

Technical Specifications#

• Impedance Range: 12–16 ohms.
• Current Draw: Approximately 0.75A to 1.0A at 12V.

Electrical Operation#

Saturated injectors operate by receiving a constant 12V power supply. The ECU modulates the ground circuit to trigger the injector pulse.

Important

Because these injectors operate at a lower current, they generate less heat during operation compared to peak-and-hold (low impedance) injectors.

Compatibility and Installation#

• Resistor Box: Not required. Saturated injectors are designed to be driven directly by the ECU injector drivers.
• System Integration: These are the factory-standard injectors for all OBD1 and later Honda platforms. If upgrading from low-impedance injectors, the factory resistor box must be removed and the wiring bypassed to ensure proper operation.

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