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MAP Sensor

Manifold absolute pressure sensor reporting boost or vacuum to the ECU.

Definition

Speed-density tunes rely on MAP and intake air temperature for fuel calculation.

Accurate MAP readings are essential for forced-induction calibration.

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
  • MAF SensorMass airflow sensor measuring incoming air mass for fuel delivery calculations.
  • 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