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MAF Sensor

Mass airflow sensor measuring incoming air mass for fuel delivery calculations.

Definition

MAF-based tunes are sensitive to intake changes and leaks downstream of the sensor.

Larger piping or blow-off venting may require MAF scaling in the tune.

Related terms

  • ECUEngine control unit — the computer managing fuel, ignition, and emissions parame
  • OBD-IIOn-board diagnostics standard providing standardized trouble codes and sensor da
  • MAP SensorManifold absolute pressure sensor reporting boost or vacuum to the ECU.
  • Knock SensorA sensor detecting engine knock (detonation) so the ECU can retard timing.
  • CAN BusController area network — the digital communication backbone linking vehicle mod
  • Wideband O2 SensorA high-accuracy oxygen sensor reporting precise air-fuel ratio for tuning.

Category: Electronics · Updated August 31, 2026