TwinTurbo.NET: Nissan 300ZX forum - He asked about resistance. Your (correct) post was A:F.
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Subject He asked about resistance. Your (correct) post was A:F.
     
Posted by BobbyT on July 15, 2008 at 12:34 AM
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In Reply To no posted by aliaZ on July 14, 2008 at 10:44 PM
     
Message If you could get your filter dirty enough to seriously restrict flow (actually cause drag on descending pistons), your engine would become less efficient...at WOT.

At anything else, you're already restricting the engine, except you call it "throttling". Probably back in the day people misinterpreted their low mileage due to richness as due to intake restriction, and that's how the myth came to be. But restricting airflow via dirt isn't much different from restricting it via a metal disc.

Except that you don't want to be sucking more dirt than necessary into your engine.

     
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