1.8 hp makes more sense, since when coasting in gear it doesn't make hardly any difference of the throttle is open or closed. I see the error, pressure should be divided by m^2 not m^3... that would make it 1.8 hp, if I divide the displacement by 2. Anyway the engine is operating between 1/2 and 2/3 maximum BMEP at 2042 RPM at 65 mph and a 15 mph headwind, probably a good point on the BSFC map.
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- Tony
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