Cold Start and Catalyst Heating Strategies

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

Cold start requires special ECU strategies for reliable ignition, stable idle, and rapid catalyst light-off while managing emissions.

Gasoline Strategies

  • Enrichment — extra fuel compensates for wall wetting
  • Timing retard — increases exhaust temperature
  • Elevated idle — faster warm-up

Diesel Strategies

  • Glow plug control — pre/post heating
  • More pilot injections — smoother cold combustion
  • Elevated rail pressure — better atomization

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