These air/fuel monitors consist of an oxygen sensor and a calibrated electronic display, which directly indicate air/fuel ratios from approximately 12 to 15:1. Use them as a tuning tool to guide fuel adjustment and jetting, or to improve ignition spark advance curves. They also work great for RVs or any application where frequent altitude and climate changes are encountered. These kits include an oxygen sensor/bung, a wiring harness, the display unit, and installation instructions.
