Ecoboost engine question

Wes Tausend wrote:
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On the other hand, I believe that a turboed engine is slightly more efficient than a NA (normally aspirated) motor for the same hp and/or equivalent displacement. The reasoning is that the end exhaust is slightly cooler on the turbo, meaning it derives more power (more is used to do work) out of the same fuel that must be equally burned to provide identical propulsion of a pair of trucks. One of the pair is assumed to be turboed, the other NA in this imaginary test.
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