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Old 06-15-2010, 12:54 AM   #1
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Default Opinions on my AFR target table

So I had made this table up a while ago and I am running my car on this with stock injectors at about 8psi. Could anybody please give their opinions to this?
Thanks.
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Old 06-15-2010, 02:30 AM   #2
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Wow, that really lean for idle, you car will idle at that afr? Other than that, you could get a little leaner at the higher RPMs, you usually end up with needing the most fuel at the torque peak. So if it were me, I would make the whole top row 11.8, except between 45 and 59k I would make it 11.6. Do a similar thing for the next two rows and uh.. oh and 94 kpa, 38, 45 and 52k I would make em 13.4, and make the cells to the left and right 13.7

Something like that.
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Old 06-15-2010, 06:22 AM   #3
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Idling at 14.7:1 - What's up with that? The stock ECU aims for stoich.
I can happily idle my engine at 15.5:1 but it does idle the most smoothly at 14.7:1.
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Old 06-15-2010, 09:47 AM   #4
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I'd aim for 15.5-16 at highway cruise areas. and maybe a tad leaner between 94-100kPa
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Old 06-15-2010, 10:28 AM   #5
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Mine is at 11.5:1 up top in boost, but I have the same values and just scored 24mpg pulling a trailer on a 5-hour trip at 80mph.
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Old 06-15-2010, 02:25 PM   #6
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I'd say when I cruise along at about 60mph, 5th gear is about 3500 RPM ish, and my AFR's read about 14.7. That's pulling about 10inHG. Vacuum more than that and it's about 15.2. I'm averaging 29mpg with my current Fuel Table, so I'm not complaining. I was deep in boost the other day and I saw it never went richer than 12, so I was a bit concerned, that's all. Thanks for the input guys!
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Old 06-15-2010, 03:48 PM   #7
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i idle and cruise at about 15.0-15.2

i like to run 11.7 -11.8 at wot, but then again i track my car mostly, so i keep a little extra headroom.
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