I'm thinking that if water is added to the exhaust gases, it will form steam to add to the volume. Then the required power could be attained with a lower pressure drop. Someone should thermodynamically analyse it but I think it would mean higher overall efficiency.
For even higher efficiency, preheat the water by running it through a heat exchanger heated by coolant.
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If America manages to eliminate obesity, we would save as much fuel as if every American were to stop driving for three days every year. To be slender like Tiffany Yep is to be a real hypermiler...
Allie Moore and I have a combined carbon footprint much smaller than that of one average American...
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