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Remember, that particular map is good only for the particular car it was created from.
But the article did point out the reasoning behind the pulse and glide technique and why it works so well.
My question is, if having the throttle partly open creates a scenario where the engine isn't in its high efficiency area due to a bit too much vacuum sucking the efficiency downhill, why not add additional exhaust gas to lower the amount of vacuum? (sorry, couldn't resist the pun) The spent exhaust gas would be inert and not create more power, while lowering the manifold vacuum and the associated pumping losses.
And while the scanguage can give you detailed information, it doesn't have a simple LED to alert you to a poor efficiency condition. I would think that little device would be quite a nice fuel saver though.
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 RIP Maxima 1997-2012
Quote:
Originally Posted by jamesqf
I think you missed the point I was trying to make, which is that it's not rational to do either speed or fuel economy mods for economic reasons. You do it as a form of recreation, for the fun and for the challenge.
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