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International Automotive Technicians Network
Re: Do Cold Engines Produce Significant NOx?
Posted to Technical Theory Forum on 8/16/2004

One thing you should keep in mind is that the ECM on your car carefully monitored ECT, IAT, load (which varied, decreasing slightly with temperature), etc and precisely corrected timing, airflow and mixture to best deal with those changes. The actual charge de... Login to read more.