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BMW 3-Series (E90 E92) Forum
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(MHD) Merging two custom files into one custom map
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02-26-2023, 05:52 AM | #1 |
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I want to merge two custom maps to be used with switching back and forth with MHDs new map switching festure. In another group they described it being possible. Not sure if that’s entirely true but that’s the goal.
I have two maps I want to put together as one and have them be able to switch between one another without having to stop and reflashq. How can you do this in Tunerpro, or should I use another application to put them together? Or is it not possible yet? |
02-26-2023, 06:28 AM | #2 |
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It's mostly possible (but need a bit of work) if your two maps have a similar base, cause the multimap thing let you changes more or less those things between maps: fuel, ignition, load & WGDC adder
So yes, you need TunerPro, you need the last MHD XDF for your DME ( https://github.com/dmacpro91/BMW-XDFs ). It contains a "MHD+ Suite" category with all tables needed for the multimap. There is also a basic multimap example ".bin" file that is prefilled with standard values to check how it's populated. You also need that your two tunes files are not locked : ".bin" file extension, not ".mhd". After loading the map 1, then you will need to report/copy and adapt values of the second map to the "MHD+ Suite/Map Switch - Slot 2" tables, mostly like I said : fuel, ignition, load... If you do not feel comfortable with that, I imagine it's probably safer to contact your tuner to do it for you.
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02-26-2023, 06:38 AM | #3 | |
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02-26-2023, 07:02 AM | #4 | |
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The XDF file is like an index/references file for all defined addresses of tables of bin files for one specific DME version, it's not your tune file. The .bin is your tune. First you load the correct XDF in the "XDF" menu, then you open your first bin (the one you want to be Slot #1) in the "File" menu. For map 1, and for I8A0S DME at least, with a standard .bin file, the only changes is that it mandatory uses "Load Target per Gear" instead of "Load Target" it's almost the same with more control accross gears, all other tables are the same (for slot 1). Then yes, for slot #2, you want to copy values (fuel, ignition, load..) of your second .bin inside the "Map Switch - Slot 2" tables. Yes, in "MHD+ Config", you can enable the map switch, the number of slot you need and so on. All tables need to be carefully examined because you have to populate all breakpoints tables and things like that (if you don't use the multimap .bin as base). You can use the "Compare" menu to load the multimap .bin example, and to load you second tune, to compare and copy/paste values between files.
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