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The Edelbrock Narrow Band LED air‑fuel ratio monitor kit (part #6593) is designed for use with aftermarket carburetor and EFI installations. The complete kit includes an LED display, oxygen sensor, sensor bung and wiring harness to give a visual lean/rich indication for tuning. Intended to aid tuning decisions, the monitor helps improve ignition and spark advance curves when used with proper tuning practices for carbureted or EFI setups.
Edelbrock Air/Fuel Ratio Monitor
