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BMW 3-Series (E90 E92) Forum
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V3 Data Logging - What to Look For?
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12-01-2008, 11:27 AM | #1 |
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V3 Data Logging - What to Look For?
What's the best way to tell if I'm maximizing my V3 settings or going too far with different fuel grades? Should I increase the UT until it starts pulling timing and then back off?
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12-01-2008, 12:29 PM | #5 | |
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To fully determine when the octane versus boost threshold is reached, you need to know true overall timing. And I am still skeptical if the DME shows this including any knock retard. |
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12-01-2008, 12:58 PM | #7 |
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Maybe it is sounds silly but what do you mean by saying "starts pulling timing"? Are you refer to the ignition or fuel correction?
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12-01-2008, 01:06 PM | #8 | |
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This should be determined soon and will be moot as the AutoEnginuity software will read the knock activity as well as knock correction values. This is ultimately what we want to see. |
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12-01-2008, 01:07 PM | #9 |
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That is correct, when does the DME start trying to reduce power through ignition retardation. You want to run just at or below this threshold.
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12-01-2008, 01:41 PM | #10 |
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Ignition timing. I was under the assumption that a good way to max the tune would be to run it up until it starts to knock and hence pull timing - then back off from that. But I guess there's no clear way to monitor that with what I have at my disposal.
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12-01-2008, 04:56 PM | #11 | |
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Does that mean the OBD tool from AE isn't available yet or that you've just not seen enough data from various sources to prove whether OBD in general displays the (net) total advance vs static ignition timing map?
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12-01-2008, 06:43 PM | #12 | |
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http://www.autoenginuity.com/BMW-All-Systems-List.html |
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12-01-2008, 10:20 PM | #14 |
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Correct, they haven't included it yet. It was supposed to be out back in May/June. It was then later delayed to September and now January. But they supposedly have read and reset the non-OBDII codes (OEM specific) back in the summer. They were trying to finalize the logging ability.
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12-02-2008, 09:32 AM | #15 |
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