03-09-2021, 11:27 AM | #1 |
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Super Knock??
Hey, i scanned for some codes today and this popped up. What could it possibly be
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03-09-2021, 11:57 AM | #2 |
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This is usually fuel quality related. Bad gas, too low octane for your tune. What tune?
Drive easily, no full throttle until put in better gas. Get the highest octane gas from another gas station, preferably top tier -Costco, Shell, BP, Chevron, etc Can also try a few gallons of E85 fuel mixed with your premium fuel to stop detonation/knocking. Do you have any logs? |
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03-09-2021, 02:13 PM | #3 | |
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Im on the stage 2 bm3 tune. I usually use costco gas but lately that seems to be causing me a lot of problems. I got in contact with ptf and they had me flash back to stock and do some logs. I put shell gas and went on to do a few runs on the stock map. here are the logs. https://www.bootmod3.net/log?id=6047...90c6710d08401a https://www.bootmod3.net/log?id=6047...90c671d1d70395 https://www.bootmod3.net/log?id=6047...90c671d1d703a0 |
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03-09-2021, 09:37 PM | #4 |
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I looked briefly at the first log and it looks pretty OK. The only thing that caught my eye was a 10F IAT rise during the pull. What IC are you running?
I never had good luck with Costco gas. I'd try some Shell 93 and log the Stage 1 map. If no issues, ease into and log the Stg 2 map. Could be as simple as bad gas. |
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03-09-2021, 10:56 PM | #5 | |
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03-10-2021, 04:27 AM | #6 | |
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Try some logs after you fix your intake. On pump 93 the car will start pulling timing & power with IATs >105F and the Stg 2 map will generate a good bit more heat than the stock map. |
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03-10-2021, 05:26 PM | #7 | ||
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03-10-2021, 07:11 PM | #8 |
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I'm not convinced you have bad hardware. I think you may have had bad gas.
But, you should drive a bit on Stage 1 with Shell 93 to see if it feels OK. If so, try some logs for review. If that checks out, then move back up to Stage 2. |
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03-10-2021, 07:29 PM | #9 |
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Ok so ive been running the stock map today and driving it, it feels great. on startup its rough. no codes or anything.
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03-11-2021, 09:14 AM | #10 | |
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I'm not the best guy to help troubleshoot that. I would post up in the 3-series N55 forum to get more feedback if you don't get other feedback here soon. |
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03-12-2021, 10:47 AM | #11 |
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ok so yesterday i pulled the map and maf sensors and cleaned them. car started up perfect today and has been running phenomonal the past 24ish hours. The map sensor was pretty dirty which leads me to believe that was the reason for all of these issues. Im gonna run it on the stock tune for another day or so and see if any issues pop up. if not then i will bump up the tune and go from there
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03-12-2021, 11:24 AM | #13 |
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