Quote:
Originally Posted by Figjam74
Also, what's the change in RPM?
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From less than 2K to something over 3K - which is the clue to two possible reasons for the increase. One of course is simply the increased friction from the pistons and so on moving faster. Second is that the VTEC shifts to its power mode at about 3K rpm.
In any case, it's not the specific numbers that matter, but the general principle. IC engines do not have a linear fuel in -> power out function, so it's quite possible to have situations where you do in fact get better fuel economy by going faster. With my Insight, one place this is easy to spot is on upgrades, where it's better to go faster, if that means I can stay in 5th instead of downshifting. But as always, your mileage may vary :-)