Quote:
Originally Posted by Drifter
I can see where a higher flow air filter would make a difference at higher loads, but at light cruise why would efficiency differ throttling with a filter vs a throttle plate?
Edit: unless maybe the ECU were to interpret the higher throttle position as demanding more fuel enrichment & less ignition timing even though actual power demand was equal?
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The timing stayed consistent at 36 degrees and target AFR stayed at 15.5.