so I'm hearing some figures like anywhere from 10 to 30% increase in mpg's...
does anyone have any instantaneous evidence...like from a scangauge? Or are these estimates over a tank?
Anybody done any informal testing...say where they would draft a semi, record the mpg's off the scangauge...then change lanes or drop back and getting another reading, etc..?
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1991 honda crx dx
1993 honda civic hatch
1997 toyota 4runner
2006 honda civic si
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