This guide provides a technical overview of fundamental concepts required for engine management and performance tuning.

Fueling and Airflow#

• Air/Fuel Ratio (AFR)0: The mass ratio of air to fuel present in the combustion chamber during engine operation.
• Wideband O2 Sensor0: A sensor used to measure the actual air/fuel ratio in the exhaust stream, essential for closed-loop tuning.
• Injector Sizing0: The process of selecting fuel injectors with the appropriate flow rate to meet the engine's power requirements and duty cycle limits.

Diagnostics and Monitoring#

• Exhaust Gas Temperature (EGT) Sensor0: A probe used to monitor combustion temperatures to prevent engine damage and optimize ignition timing.
• Data Logging0: The practice of recording sensor data and ECU parameters during operation to analyze engine performance and identify tuning issues.
• Real-Time Programmability0: The ability to modify ECU calibration maps while the engine is running, allowing for immediate feedback and adjustment.

Tip

For precise fuel calculations, ensure your injector dead-time (latency) data is accurately configured in your ECU software before adjusting global fuel trim settings.