Quote:
Originally Posted by cosmick
Part of the extra output is from the extra displacement, the rest must therefore be from greater efficiency.
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Different measures of efficiency. That efficiency is power per displacement, not power per fuel consumed. Either one can be labeled "efficiency", and they are parallel but not identical.
That said, your FE will probably not be much worse with the D16 versus the D15. I'd be surprised if it were better, though.
-soD