Evolve Intake Air Temperature (IAT) Sensor Relocation Kit - BMW E46 M3 | E39 M5

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The factory placement of the E46 M3's air intake temperature sensor (inside the airflow meter) was a design oversight in this otherwise near-perfect car.  Since the airflow meters sit directly behind the radiator, the factory sensor sends inaccurately high temperature readings to the DME when the engine is hot.  When the DME receives these false high readings, the engine’s performance is retarded to protect itself. 

In tests, the temperature inside the AFM is often over 45 degrees F higher than the actual air temperature outside the car.  This kit relocates the sensor to the front of the car inside the airdam, where it will always send the true temperature reading to the engine’s DME.  This simple modification will ensure consistent performance when the engine is at full operating temperature.

Each kit comprises of:

  • Intake temperature sensor
  • Retaining nut
  • Extended harness
  • Installation Instructions

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