This air/fuel monitor consists of an oxygen sensor and a calibrated electronic display which directly indicate air/fuel ratios from approximately 12 to 15:1. Use it as a tuning tool to guide fuel adjustment and jetting or to improve ignition spark advance curves. It also works great for RVs or any application where frequent altitude and climate changes are encountered. This kit includes an oxygen sensor/bung, a wiring harness, the display unit, and installation instructions.
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