Quote:
Originally Posted by mwebb
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3.gasoline engines with direct injection still use throttle plates or variable lift intake valve to control air flow to the intake and by so doing
MUST have suction throttling loss es / pumping losses
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I don't think the ecoboost has a throttle, I don't know why it would need one either. The original (i.e. 50 years ago) direct injection schemes had a throttle, but I don't think it is a requirement these days. What am I missing here?