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Old 11-30-2009, 04:43 PM   #1
windozer
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Default Open Loop Fueling Question

Ok, so I know that a WBo2 is a good idea cause the front o2 is known to be inaccurate esp. around WOT. When tuning OL fueling, isn't the ECU using the front o2 to measure AFR and adjust the IDC to meet the target AFR? Isn't there an inherent problem with using an inaccurate sensor to measure AFRs that the ECU uses in it's fueling compensations?
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Old 11-30-2009, 04:51 PM   #2
Agkelos
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It doesn't use the narrow stock o2 to measure Open loop fueling. It uses your MAF signal and the a target AFR to adjust the injector pulse. How ever when you tune it you need the wide band to know if you are at the correct AFR.
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Old 11-30-2009, 04:52 PM   #3
windozer
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OK Thanks, that makes sense.
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