Quote:
Originally Posted by JacobAziza
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My understanding is that the whole reason pulse and glide improves mpgs is because during acceleration the throttle plate is open, reducing the force needed to suck air past it, otherwise known as "pumping losses".
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Sure, full throttle reduces pumping losses. The trouble is that all cars I've ever worked on don't lambda regulate full throttle. Usually they run a little rich on full throttle to be sure to avoid detonation. I think the rich mixture more than offsets the gain in pumping losses.
Disclaimer: I haven't worked on the newest cars from the last five years or so.