Quote:
Originally Posted by monroe74
So the system is designed to drop fuel pressure when manifold pressure drops. So the system keeps fuel pressure more-or-less constant relative to manifold pressure, not relative to atmosphere. (I say "more-or-less" because I don't know for sure that the relationship is purely proportional. Although I bet it is.)
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Yap, that is it. As for proportionality yes, it's one-to-one except some response delay time that the valve might have... and maybe except if you installed one of
these.
Quote:
Originally Posted by monroe74
Anyway, I have a feeling that my car is just like your car, in this regard. And I have a feeling that this is the prevailing design, for EFI. Which should mean that pulse width is a good proxy for true fuel flow, after all.
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Yep, I'm very inclined to agree with it
