Secondary air injection, internal EGR and backpressure modelling, the N80 purge observer, misfire detection, the second lambda loop, the N249 diverter and the V144 leak-detection pump — each with its own delete protocol.
Chapters#
| # | Chapter | Covers |
|---|---|---|
| 27 | Diverter Valve N249 | The N249 electro-pneumatic plumbing and a clean bypass that stores no DTCs. |
| 28 | EVAP & Leak Detection Pump | The V144 leak-detection pump cycle and how to delete it without leaving codes. |
| 46 | Secondary Air Injection | SAI chemistry, the diagnostic flow test, and a three-layer software elimination. |
| 47 | EGR & Backpressure | Internal EGR thermodynamics, the BGMS backpressure model, and big-turbo retuning. |
| 49 | Tank Ventilation (N80) | Purge valve dynamics, the FTE vapour observer, and deleting it for track use. |
| 50 | Misfire Detection | Segment-time misfire detection and the lightweight-flywheel false positive. |
| 52 | Rear O2 & Catalyst | Catalyst oxygen storage, the rear-lambda trim loop, and rear O2 elimination. |
What this part is about#
Symbols that appear in at least 3 of the 7 chapters in this part — the common vocabulary you will meet reading across it.
ESKONF DFPM N249