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Old 07-01-2019, 05:59 AM   #6 (permalink)
Ecky
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Gaptooth (retired) - '00 Honda Insight
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If the ECU doesn't make a long-term fuel trim adjustment (or the adjustment isn't quite enough), every time you change throttle position it will swing rich until the O2 sensor has a chance to correct.

It's possible that even if it does make the correction, it will need to relearn it every time you start the truck.

Ideally you'd get aftermarket engine management and correct for the larger injectors.
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