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well i had to make my own as no-one else had, all i do (and am still doing for parts) is have a good collection of roms and address files, and look at values for other cars, and just use common sense to figure stuff out, then try it on my board when i get time.
i have a good collection of different roms (7 in fact! ) from different k11 models, see where they differ and figure out what the map is.
a big help was getting a tuned version of my rom, and comparing them to see what they altered, then figuring out what it was.
you should be able to see what the fuel maps, timing maps are just by looking through the hex (or, and its a bit drawn out, is to copy the hex, put it in excel, and convert it to dec, and look for stuff that looks right)
thats my way anyway, im trying to learn assembly to get a better idea of things too.
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