Quote:
Originally Posted by serialk11r
5% FD reduction is typically 2-3% less cruising efficiency, if that's what you wanted to know. The stock tune runs fairly rich on heavy throttle so you can easily burn 2% more gas by stepping on the pedal a little harder. On a flat freeway with cruise control on and no wind you'll lose 1mpg or so, because physics, but it would be quite hard to notice.
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This is all that needs to be said^^^.
The difference in gearing is so minor and the variation in MPG due to different driving conditions so vast that any comparison is useless.