Quote:
Originally Posted by Equinox
how would you have two seperate MAFs and TBs but the intake manifold plenum is not seperate?
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If I understand what you are asking, I think the reason is quite simple. Air is coming from two different locations through two ITB's and into a common plenum. In order for the ECU to know precisely how much air is flowing into the plenum and into the combustion chambers, the airflow needs to be measured through the two points of entry via two MAF sensors.