05-22-2021, 09:01 PM | #1 |
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Anyone flashed the ECU yet?
Just over 300 miles and the car feels flat.. Second gear pulls well.. just thought it would be more impressive with over what they claim to be 473... Has anyone done ECU flash?
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05-22-2021, 09:47 PM | #2 |
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What are your drive settings? ECU is uncracked so far. You could use JB4.
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|2021 M4 Competition| |2018 M3 Competition| |1994 525i|
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05-23-2021, 07:48 AM | #3 |
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Can anyone credibly confirm or deny that they "do something" to the G8X at your break in service? Keep hearing both sides. I'm not complaining though. I think the acceleration is great, though I'm not pushing it with only 500 miles. Thx
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05-23-2021, 08:13 AM | #4 |
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Obviously I can't tell you how it feels to you, but it is worth mentioning that multiple dyno tests have confirmed those numbers to be valid (if not underrated).
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05-23-2021, 12:30 PM | #5 |
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Im interested in knowing everything and anything that happens after 1200 miles as I cannot find anything at all.
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05-23-2021, 12:43 PM | #6 | |
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I got that information, in writing, directly from a BMW Technical Engineer with BMW North America. I've got a screen shot of the email somewhere, but I've posted it on the forums multiple times. If there was a change in power it would be documented in the service details and the dealership would be able to show you (not just tell you).
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05-23-2021, 12:48 PM | #7 | |
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Being able to really rev the car out just makes it feel so alive, and it loves being revved hard. For me that was the big difference post break-in. They didn't do anything to it, but the way I drove the car changed. |
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05-23-2021, 01:37 PM | #8 |
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OP, cannot speak for the MT, but if anyone questioned the power of the Competition models I would question if they have ever driven one?
What does seem to be clear based on numerous reviews and direct comparisons is that the Competition model not only has more torque/power than MT model, the difference is readily apparent on the roadway/track. That being stated, I have not heard anyone else suggest the MT is by any means underpowered, or otherwise feels 'flat.' The topic of a 'break-in inspection' tune that release more power, releases rev limiter, etc. . . . is tired and beat to death. Not sure why it comes up so often?? ALL that occurs is a fluid swap, basic inspection and deactivation of 'running-in check.' I have yet to come across the official 2021 BMW Maintenance manual, however, the 2020 manual covers the 'break-in inspection' and I doubt any change in the inspection protocol has occurred. Page 8 of the manual covering the 'break-in inspection' is attached. . . no idea why M4 and not M3 is listed? ///AVM |
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05-23-2021, 04:00 PM | #9 | |
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05-25-2021, 06:03 PM | #10 | ||
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The dealer told me the main focus for the 1200 service has to do with the differential. As far as the engine is concerned it was good to go when it left the factory in Germany. YMMV. |
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05-31-2021, 04:46 PM | #11 | |
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