02-21-2024, 06:45 PM | #1 |
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M2 N55 over revs/boosts between shifts
I've had my 18' M2 for a few months now and have an interesting problem.
The car is currently running BM3 stage 2 93 tune. In comfort mode only between shifts at around >60% throttle when clutching in the RPM's will jump up. Example: 2-3 shift at WOT, clutch in at 5500 RPM the RPM will jump to 6000+ RPM. Definitely doesn't feel safe. It does not happen in sport or sport+ only comfort. Also didn't occur with the stock tune flashed. I have a feeling this might have to do with the diverter valve but any input would be great. (Not sure if my car has stock DV or not) |
02-21-2024, 07:23 PM | #3 |
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02-23-2024, 09:15 AM | #5 |
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do you have latest version of the tune? i recall bm3 made some tune changes for shifting logic in the m2 n55 a while back.
i recommend you reach out to bm3 help directly.
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03-04-2024, 07:50 PM | #6 |
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Reached out to BM3 with datalogs and they said boost spikes are normal when you let off throttle. Waiting to hear back from them since I attached this video now.
Each time you see the RPM’s jump is when I clutch in. Also forgot to mention in original post that I have a CDV delete. video |
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03-05-2024, 11:05 AM | #7 | |
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Quote:
If the issue remains, check plugs and injectors. Logs would help |
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03-05-2024, 11:50 AM | #8 | |
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Quote:
https://bootmod3.net/log?id=65e2aa7dc589af3c359f0d7a https://bootmod3.net/log?id=65e2aa7d909e963e4e3c2157 |
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