Throttle Position During Acceleration and its effect on FE

[MetroMPG]

Interesting! He goes out with a bang. PS Nice to see the mid 60's coming from your car. (Did you have license plates on during the shenanigans?)

Originally Posted by JanGeo

I think if you just did a couple of 0 to 40/50/60 runs with the scangauge resetting it between runs you could tell right away if brisk or slow acceleration would be better

I think that would be misleading. A simple 0-to-x comparison, resetting as you reached the target speed would only tell you that brisk acceleration uses more fuel.

The big question being addressed is whether the total fuel economy along a given distance is different depending on rate of acceleration in the beginning portion of that distance.

I'm not surprised that the difference is small. It's what zpiloto discovered too, if I remember right.

When I did the 133 mpg round trip using pulse and glide, I used a fairly aggressive amount of throttle (I'm guessing 60% - enough that I could hear "induction noise") up to about 2600 RPM. Which proves nothing without a comparison, except that 133 is attainable with moderate load/low RPM .acceleration.