Sensor Plausibility Checks and Cross-Checks

🧠 Part of the TuningBot ECU Knowledge Base — in-depth documentation on ECU logic, maps, emissions systems and safe calibration methods.

Modern ECUs cross-reference sensors to detect faults and maintain safe operation.

Common Cross-Checks

  • MAF vs MAP — should correlate with throttle/RPM
  • EGT vs Load — higher load = higher EGT
  • Boost vs Turbo Speed — related by physics
  • Lambda sensors — pre/post cat correlation

Calibration Notes

Modifications may affect sensor relationships. Larger turbo changes boost/speed relationship.

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