Fuel Mapping Calculator
Calculate optimal air-fuel ratios for different engine conditions. Determine ideal fuel mapping settings for performance, economy, and emissions based on your engine specifications.
Step 1: Engine Details
Understanding Air-Fuel Ratios
Stoichiometric ratio for gasoline is 14.7:1 (ideal for emissions). Performance tuning often uses richer mixtures (12-13:1) for power and safety, while leaner mixtures (15-16:1) can improve fuel economy but risk engine damage.
Step 2: Tuning Goals
Fuel Mapping Optimization
Modern engine management systems use complex fuel maps that adjust air-fuel ratios based on engine load, RPM, temperature, and other factors. Optimizing these maps can significantly improve performance, efficiency, and drivability.
Fuel Mapping Results
Recommended Air-Fuel Ratio
Tuning Recommendation
For maximum performance with your turbocharged engine, we recommend a richer air-fuel mixture of 12.5:1 under wide open throttle conditions. This provides additional fuel for cooling and detonation prevention while maximizing power output.
Tuning Scenario Comparison
| Tuning Goal | Recommended AFR | Power Potential | Efficiency Impact | Safety Margin |
|---|
Fuel Map Visualization
Fuel Mapping Formula
Required Fuel = (Airflow × Target Lambda) / (Stoichiometric AFR × Fuel Density)
Modern engine management systems calculate required fuel based on measured airflow and target lambda (actual AFR divided by stoichiometric AFR). The ECU then adjusts injector pulse width to deliver the precise amount of fuel needed.
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