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Lemme put it this way, I would say a temporary restriction like a flapper results in more EGR. I don't mean the flapper is an EGR system in the conventional sense, I mean it increases EGR. EGR and EGR systems don't mean the same thing. Any car has some measure of Exhaust Gas Recirculation since it's hard for all the exhaust gases in the cylinder to be expelled, and since the flapper is increasing the amount of exhaust present in the cylinder during warmup I would say it's increasing EGR. I think my language was a bit vague and hope this clears up what I meant.
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