So, as you say I am not taking into account the thing that you said about higher intake manifold vacuum being a result of shutting off injectors/ignition to half the cylinders in a given engine, you're implying that merely shutting off the injectors/ignition to said cylinders is actually going to lead to worthwhile fuel economy savings.
Would you care to enlighten us with A-B-A testing data showing this to be worthwhile? And are you currently using this method?
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