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Old 11-08-2008, 01:42 AM   #1 (permalink)
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2004 Honda Civic Si EP3 - 42.6 mpg

Well, I really wouldn't have believed it a couple of years ago. The EPA is 22/28 and I have always gotten 32+. Two tanks ago it averaged just under 40 mpg and this last tank was 42.6. Really surprised since the Si has a low geared tranny. I never used the highway and most trips were short and the motor didn't get the chance to warm up often so there's lots of room for improvement. Psyched!

Changes this past tank:

-High(er) tire psi.

-Very low rpm shifting @ 2/3 throttle (read an article, in here I think, about lugging).

-Premium gas, wanted to try it since the EP3 has higher hp on a dyno with premium.

-Pulse and glide.

This refill I went back to regular and won't change anything else. And, yes, I need to fill out the gas logs, sorry. I do have all my reciepts and mileage.

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