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09-21-2012, 05:17 PM | #1 |
Scooby Newbie
Member#: 332900
Join Date: Sep 2012
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Stock 2012 WRX with stage 1 91acn logs. Please review..
Normal cruising from dead stop to 4th gear:
https://docs.google.com/spreadsheet/...GxrN1JPcFdLc3c Below are two WOT runs in 3rd from about 2500rpms. I see some numbers in the "fine knock learning" but according to the cobb video the numbers start out at -1.4 and work their way down to zero. So, it looks good to me, but I'm new to all this. https://docs.google.com/spreadsheet/...0E3c3h4ZVZDdGc https://docs.google.com/spreadsheet/...211bmRWZFpSWmc
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09-22-2012, 06:52 AM | #2 |
Scooby Newbie
Member#: 332900
Join Date: Sep 2012
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Filled up my tank with Shell 91 (using chevron 91 with logs on first post), and got this...
https://docs.google.com/spreadsheet/...0gxVm1FU0lMcFE |
09-22-2012, 08:32 AM | #3 | |
NASIOC Vendor
Member#: 4803
Join Date: Mar 2001
Location: Austin, TX
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Quote:
Bill |
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09-22-2012, 07:13 PM | #4 |
Scooby Newbie
Member#: 332900
Join Date: Sep 2012
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Question about target boost...I understand 14.5 is target boost for stage 1 and I'm hitting up to 15.4. Is that bad? Or is it OK cause I live in a hotter climate area (California, hits 30 degrees at the lowest rarely)?
Another thing...I did a data log in 95 degree weather and then in 60 degree weather, but the boost stayed the same. I though the ecu automatically lowered boost in colder weather? Should I be worried about this (especially when it hits low 30's in the winter)? |
09-23-2012, 10:47 AM | #5 | |
NASIOC Vendor
Member#: 4803
Join Date: Mar 2001
Location: Austin, TX
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Quote:
Bill |
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09-24-2012, 07:50 PM | #6 |
Scooby Newbie
Member#: 332900
Join Date: Sep 2012
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Did two more datalogs. 90 degree weather. Same tank of gas as my other log with zero knock. Why has knock returned?
https://docs.google.com/spreadsheet/...VZfSmI1RHpPNmc https://docs.google.com/spreadsheet/...2hJQnhDSENWMGc |
09-24-2012, 07:51 PM | #7 |
Scooby Newbie
Member#: 332900
Join Date: Sep 2012
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And what does the 4.69 on a/f learning mean?
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09-25-2012, 09:51 AM | #8 | |
NASIOC Vendor
Member#: 4803
Join Date: Mar 2001
Location: Austin, TX
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Quote:
Bill |
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09-25-2012, 09:36 PM | #9 |
Scooby Newbie
Member#: 332900
Join Date: Sep 2012
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Can someone explain to me what the a/f learning is. Mine is always in the high positives, but when I look at other stage 1 data logs, they always have negative numbers.
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09-26-2012, 08:38 AM | #10 | |
NASIOC Vendor
Member#: 4803
Join Date: Mar 2001
Location: Austin, TX
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Quote:
The learned values can alternate between positive and negative - there's a margin of error here and it isn't always precise. There are also variances in the ethanol content of fuel that impact these trims. A general rule of thumb is that they all should be within about +/- 5%. If you are well outside of this, then you may have a mechanical fueling issue. If not, then it is not something to be concerned with, regardless if they are all positive or all negative, or a mix of both. Bill |
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