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Old 10-16-2008, 09:45 PM   #15 (permalink)
BlackDeuceCoupe
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Location: Central Arizona (USA) Missing Posts: 225
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BDC's Honda CiViC HX/Si - '98 Honda CiViC HX/Si (HX Shell/Si Swap)
90 day: 40.56 mpg (US)
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Quote:
Originally Posted by brucepick View Post
I'm getting mostly low 40's mpg and want more!
You might try resetting the ECU...

My D16Y5 was very sensitive to changes, so I reset it a few times a year - when the seasons changed, when I installed new spark plugs, when the gas stations switched from winter blend to summer blend, and so forth, and so on - and it always made an improvement!

I drove my HX with a stock motor for 7 years, and it got 44-52 mpg, for the most part. I got 38 mpg a couple of times, like when I drove it off the car lot (brand new) and when I burned in some brake pads. I got 62 mpg once - and 50-60 mpg several times, although it was NOT the norm.

45-ish mpg would be what I would expect - haven driven HXs for years...
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.:: B16A2 HX/Si Coupe | '98 HX shell with full '99 CiViC Si swap | 40+ MPG
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