How does the ECU determine load?
Jan 10, 2009, 01:02 AM
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How does the ECU determine load?
I've been searching this subject for a few days now, but couldn't find anything on it. Hopefully it hasn't been right beneath my nose.
I've asked this in other threads as well, but never got a definite answer. I'm just trying to understand how the ECU determines the load. Anyone know the calculation taking place?
I've asked this in other threads as well, but never got a definite answer. I'm just trying to understand how the ECU determines the load. Anyone know the calculation taking place?
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Jan 10, 2009, 05:25 PM
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Jan 10, 2009, 05:28 PM
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On the Evo 1-9, its only MAF to determine airflow for normal conditions. The JDM Evo 9 will use its 3 bar MAP to determine airflow in a limp home situation, e.g., intercooler pipe blows off or MAF sensor dies. For the Evo X, its likely the same as the JDM Evo 9, but this is TBD.
Jan 10, 2009, 05:37 PM
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On the Evo 1-9, its only MAF to determine airflow for normal conditions. The JDM Evo 9 will use its 3 bar MAP to determine airflow in a limp home situation, e.g., intercooler pipe blows off or MAF sensor dies. For the Evo X, its likely the same as the JDM Evo 9, but this is TBD.
Jan 10, 2009, 05:40 PM
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On the Evo 1-9, its only MAF to determine airflow for normal conditions. The JDM Evo 9 will use its 3 bar MAP to determine airflow in a limp home situation, e.g., intercooler pipe blows off or MAF sensor dies. For the Evo X, its likely the same as the JDM Evo 9, but this is TBD.
If you're using mine .. pm me your email and I'll send you my updated IDA .. its not the 5268
Jan 10, 2009, 05:49 PM
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On the Evo 1-9, its only MAF to determine airflow for normal conditions. The JDM Evo 9 will use its 3 bar MAP to determine airflow in a limp home situation, e.g., intercooler pipe blows off or MAF sensor dies. For the Evo X, its likely the same as the JDM Evo 9, but this is TBD.
If it uses the MAF, then under normal conditions, what is the MAP used for? I'm trying to get a better understanding of the implementation of it's systems.
Jan 10, 2009, 05:54 PM
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Besides the limp home feature likely now implemented on USDM Evo Xs, the MAP sensor is used to judge (not control) EGR system performance. On the Evo 8/9, judging EGR system performance was the only purpose of the 1 bar MAP sensor.
Jan 10, 2009, 06:30 PM
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I'm not trying to get into a product discussion/argument, but since the ZChip modifies the MAP signal to change performance, wouldn't that mean the MAP sensor must be doing more than what you described?