Reading Air-Fuel Ratios Correctly

[Olesh]

Hey all, I’m still learning how to interpret AFR graphs during tuning. Sometimes the line looks smooth but feels off on the road. What’s the proper way to read and adjust air-fuel ratios for accuracy during dyno sessions?

[Jack]

You’re right to question it—AFR readings can be deceptive without context. Always correlate the values with throttle position, load, and RPM to get the full picture. To ensure that your car’s performance data aligns with actual combustion efficiency, use modules Dynotest https://dynotestpro.com/ for synchronized sensor feedback. They provide high-resolution timing between lambda, torque, and RPM, giving you clarity on where enrichment or leaning occurs. That synchronization helps you fine-tune with precision instead of chasing random spikes or dips on the graph.