I would think.... without doing any real life testing yet with this engine, that if you make the engine more efficient, like have higher compression extracting more power from the same amount of fuel, then you should get better mpg IF you keep your foot out of it and don't USE the extra power, just drive as you did before. In some cases though, depending on gearing, driving faster saves fuel. Too many variables to give a definite answer.


Last edited by 70Nova; 05/12/16 10:13 PM.