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BMW 3-Series (E90 E92) Forum
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I cloned my MSV70 DME
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09-07-2018, 04:51 PM | #2003 | |
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09-07-2018, 05:09 PM | #2004 |
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yeah, I think you could get close at least. I've been thinking about those maps for a long time.
I have a lot of tunes to build at the moment, but I'm pretty sure I have 'fixed' the torque drop off with the 3-stage manifold after ~6700rpm. It's hard to tell how accurate the torque outputs are on the DME though - I think I need it to log torque loses as well to be sure. Also, after doing some logging - I think it might be worth looking into the 'sport switch' again. Ignition advance and torque drop off quite a bit at higher coolant temps (95-104c), and it doesn't always cool to 80c fast enough at high loads. It would be great to have the 'sport switch' also change the maps for the coolant temp so they were always 80c, but when in non-sport mode they would still give you better efficiency. That way if you're at the track or whatever, you don't have to worry that the car thinks you should be in 'eco' mode (104c) just because you're idling in the paddock or something. Last edited by hassmaschine; 09-07-2018 at 05:37 PM.. |
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09-07-2018, 06:30 PM | #2005 | |
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My older Z had ran great when it was cool and not so great when hot. "Knock" nannies took control and the ignition timing was pulled. |
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09-07-2018, 06:39 PM | #2006 |
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I think its all based on coolant temp anyway. Lower the temp and the "nannies" go away on their own.
The good thing about a switch is you can have max output when desired, but enjoy top efficiency the rest of the time. |
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09-07-2018, 07:30 PM | #2007 | |
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First time I hit this was alarming, the oil temp gauge dropped 10 degrees while I was in heavy traffic on a hot day. I had to do a little digging to learn why. Yes, I live in Florida and it can get really warm in the summer. |
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09-07-2018, 08:31 PM | #2008 | |
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09-08-2018, 10:34 AM | #2010 | |
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09-08-2018, 10:20 PM | #2011 | |
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09-08-2018, 10:21 PM | #2012 | ||
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09-15-2018, 11:32 PM | #2013 | |
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Sport Mode • Coolant normal 95c (104c Stock) • coolant high 90c (95c Stock) • Coolant high+kft 80c (85c / 80c Stock) (This mode is activated at full throttle) • Amb threshold for high mode 27c (32c Stock) • Amb threshold for high + kft 32c (37c Stock) Race Mode (only for drag race application) • Coolant normal 85c (104c Stock) • Coolant high 85c (95c Stock) • Coolant high + kft 80c(85c / 80c Stock) (This mode is activated at full throttle) • Amb threshold for high mode 22c (32c Stock) • Amb threshold for high + kft 27c (37c Stock) https://www.facebook.com/MHDtuning/p...2668394995149/ |
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09-25-2018, 09:50 PM | #2014 |
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Im pretty sure MHD is for n54.
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10-03-2018, 04:12 AM | #2018 |
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did you try to tune vanos, I mean with method that worked on old ms4x cars,
first make run with vanos off to find max power, and than with vanos always on to find max torque. then you find where curves intersect thats ideal vanos switch off point? |
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10-03-2018, 09:49 AM | #2020 |
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Vanos is continuously variable, it's not like the older M52 cars with an on and off switch.
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10-08-2018, 02:11 PM | #2021 |
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Hello
Sorry for potentially posting prematurely. I'm about halfway through this thread, wanting to order a spare DME to start playing with by the time I'm done reading. I'm building an n51 e92 track car, and wanting to leave the original DME alone. My question is, can I (or would there be any reason to) try and use n52 software or DME on my n51? I'm not sure if you have more tuning options available for one or the other, or if we're even capable of cloning the msv80.1 yet. Thanks!
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10-08-2018, 02:23 PM | #2022 |
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cloning is possible with MSV80.1 but it's not straight forward like MSV80. First of all you need to be able to recover the boot password.
as far as running MSV80 code on the N51, yeah, you could do that - but I don't think it would work too well, and you'd have to create some sort of franken tune that used the MSV80 program/boot sector along with the N51 tune. |
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10-08-2018, 03:37 PM | #2023 | |
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Wouldn’t be difficult to run msv80 code on a .1 - pretty much identical code. Just have to change the ID byte to match the destination DME. |
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10-08-2018, 04:42 PM | #2024 |
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Right, my point was the N52 tune isn't made for the low-compression N51.
The offsets are the same anyway IIRC, so there's no reason to really do that, except maybe to make deleting the extra emissions stuff easier. |
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