10-23-2019, 10:03 PM | #1 | |
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Bootmod3 - 51 knocks detected in 30 minutes
Starting this thread now that I can make threads. Original comment was in the Bootmod3 General Discussion:
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Just wanted to see if this was normal or not. I did one first to third gear pull in stock tune after reading a reply to me but I'll have to do a better pull tomorrow to get better data. That one pull did have a knock detected however (halfway through first gear) Car is a 2014 335i with VRSF Charge Pipe running 93 Octane fuel Any input is appreciated Last edited by Danny__Boi; 10-23-2019 at 10:51 PM.. |
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10-23-2019, 10:15 PM | #2 |
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As i mentioned in the other thread, knock during commute-type driving isn't really cause for concern. The DME is working to optomize fuel economy; AFRs are leaner, load is lower, timing is more advanced, etc.
The knock during WOT pull could be a sign your fuel isnt high enough octane. You can always try a 91 map. It would also help if you posted your exact car specs (beyond 2014 335i), mods, fuel, etc. |
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10-23-2019, 10:53 PM | #3 | |
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10-24-2019, 01:59 AM | #5 |
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I (and many others) have to run 91 tune to avoid timing issues despite using 93 gas, apparently gas isn't gas.
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10-26-2019, 06:10 PM | #6 | |
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Here is the logs with a 4th gear pull and a 1 to 5 gear pull. Unfortunately on both pulls it looks like knock was detected: http://www.bootmod3.net/log?id=5db4cd20c090c6759f4a1edf Earlier I tried stock tune 4th gear pull and it had no knocks detected: http://www.bootmod3.net/log?id=5db4c6fec090c6759f4a1ebd Unfortunately, looks like I’ll have to give the 91 tune a shot instead. I appreciate your help! |
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08-10-2022, 06:24 PM | #7 | ||||
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08-10-2022, 08:22 PM | #8 |
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08-10-2022, 11:29 PM | #9 | |
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08-11-2022, 09:11 PM | #11 |
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I would assume way more "knock" incidents during normal low-load driving compared to WOT. As Jeremy is writing the DME will (read should) ride on the knock threshold to optimize fuel consumption.
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08-11-2022, 09:22 PM | #12 |
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Ignore it, it's normal.. if you have knock at wot, thats an issue.
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