Quote:
Originally Posted by Jakins
As for my car, the lean burn kicks in at 74 mph and it rolls between 60 and 70 mpg without any aero mods. I can do it in 4th gear around 64mph but its best in 5th gear with or without lean burn because the rpms are so low with the cx/vx trans
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Have you checked to make sure your speedometer is accurate with a gps? When doing engine and trans swaps it sometimes throws off the speedo/ odometer. You may have to add an extra step to calculate the true mpg.