Is it not possible to allow a controlled volume of unmetered air enter the inlet tract after the AFM, to lean up the mixture when WI is activated ? Filtered obviously.
Surely you must be able to calculate a fixed diameter opening to weaken the mixture by a known percentage, which would be opened by a selonoid triggered by the WI circuitry ?
Say for example
5mm = 5%
7mm = 10%
9mm = 15% etc
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