05-20-2022, 03:29 PM | #1 |
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Stage 2 E30 OTS Datalogs From Dyno
A couple of you pointed out that the WGDC has a tendency to be inconsistent in the upper rpm range. Here are the datalogs. Please share your opinions.
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05-20-2022, 05:40 PM | #2 |
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That's a video not data logs
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05-22-2022, 09:40 AM | #4 |
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That was my opinion. I mean. A video of a "log" doesn't really give us much to give an opinion on.. I mean.. fuck man
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05-22-2022, 09:46 AM | #5 |
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Let.me try..
Does this look right? It sounds weird
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05-23-2022, 08:19 AM | #7 |
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OP please send a link of your datalog and we'll check it out
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05-26-2022, 03:17 PM | #8 | |
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Quote:
https://www.bootmod3.net/log?id=6271...90c66c2a211dce https://www.bootmod3.net/log?id=6271...0b433ba3a50bda https://www.bootmod3.net/log?id=6271...90c66c2a211dcf |
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05-31-2022, 01:37 AM | #9 |
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MAF values: 1126 pounds / minute = 8512.41681 grams / second = 10640 crank HP........ what am I missing here???
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05-31-2022, 09:29 AM | #10 | |
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05-31-2022, 12:14 PM | #11 |
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05-31-2022, 04:13 PM | #13 |
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Which intercooler?
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05-31-2022, 04:18 PM | #14 |
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Why would you say cyl 1 is always a problem? That's not really a thing.
I assume at the end you were talking about how i brought up WGDC. You seem really fixed on the numbers, which is a good thing for digging into the details and comparing the thresholds, but you also need to look at the actual shape of the curves qualitatively. You can usually see right away if something doesnt look right as most curves should be smooth. See screenshot below from your log, you can see WGDC is erratic and in turn this effects everything from boost to AFR. |
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06-03-2022, 01:57 AM | #16 | |
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I have heard others in the B58 community state that cylinder 1 timing seems to drop more than others. It's interesting because I notice the same phenomenon on my logs. |
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06-03-2022, 09:40 AM | #17 |
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During your second and third pulls, IAT is rising 30 degrees on a single gear pull and causing timing drops on all cylinders. The intercooler needs to be changed.
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06-03-2022, 12:22 PM | #18 |
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06-03-2022, 02:52 PM | #19 |
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Not if it's back to back to back runs on a dyno.. thats to be expected. You can't get enough airflow to deal with heat soak.
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06-03-2022, 03:21 PM | #20 |
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I was thinking about that as a factor, but in my mind that would make the IATs increase from run to run (not enough air to cool the IC back down), but that wouldnt necessarily mean the IATs would rise a lot in a single run right? Because that is dictated by IC size/performance and not really airflow through the IC.
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06-03-2022, 03:29 PM | #21 | |
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Quote:
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06-07-2022, 03:32 AM | #22 |
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They did all 3 pulls back to back to back. No cooling periods whatsoever.
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