Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

Ideal Naturally Aspirated A:F ratio for a B18B1

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Old Jun 25, 2008 | 07:13 AM
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Default Ideal Naturally Aspirated A:F ratio for a B18B1

anyone know?

whats the stock numbers?

whats good power numbers? Etc?
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Old Jun 25, 2008 | 08:18 AM
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Default Re: Ideal Naturally Aspirated A:F ratio for a B18B1 (Dasfinc)

You think there's one blanket AFR for every load and RPM? Do you realize that the stock calibration is a table approx 12x12 and that each cell may be targeting a specific afr?

Stock B18B1 calibration probably runs 12:1 at max load and rpm, infinity:1 off throttle above 1000 RPM, just rich of stoich at idle, and 15:1 at light cruise above 45mph. You'll actually make more power by leaning out the max load and rpm region.
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Old Jun 25, 2008 | 08:22 AM
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No, I know there is a vast table. (this is why I said "anyone know the stock numbers, numbers as in plural, as in more than one)

My car is doing 13.8 at WOT, 14.5-15.0 at light cruise, thats why I was curious if someone knew a few EXACT numbers for where it should be, or had that table.
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Old Jun 25, 2008 | 09:53 AM
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that's pretty lean WOT, should be in the 13.2-12.8 range. I've seen cars that liked 13.5 though.

the exact table can be determined on the dyno. Every engine is different in what it likes.
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Old Jun 25, 2008 | 10:17 AM
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Default Re: (Relic1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Relic1 &raquo;</TD></TR><TR><TD CLASS="quote">that's pretty lean WOT, should be in the 13.2-12.8 range. I've seen cars that liked 13.5 though.

the exact table can be determined on the dyno. Every engine is different in what it likes.</TD></TR></TABLE>

I thought it was a spec on the lean side.

Car has a stock PR4, and its just an intake/exhaust car (stock header). I am getting a VAFC soon so I can richen it up a bit and see how it likes it.
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