Just after I got my Scangauge, I was getting 40mpg on a certain stretch of 10 mile 65mph zone. I "thought" I was doing the best I could and just accepted it as being a bad part of my commute. After practice and learning new skills, same car with no mods, I am getting AT LEAST 55 mpg on the same short stretch.
You may want to consider increasing your ignition timing a little, but I'm not sure how those flex-fuel vehicles work with that. Just practice practice practice the skills. I think you will find that over time, cruise control will give you your worse fuel economy. Maybe try a different gas station for fill ups...Have you tried any neutral coasting?
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