I've been tinkering with Tune ECU.....making sure that I have a copy of the DAT file (not HEX.....I still have some original Tune ECU programs that run DAT) and changing the fan cut-in. Mine is a bespoke map done on a dyno using an earlier version of Tune ECU hence the DAT file.
Is there any reason to convert to HEX or just leave it as it is? No point changing for the sake of it.
What value do most have their stepper motor set to? Mine is 58....is this is relative or absolute value?
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main reason is I dont think the newer versions of Tune ecu will use a dat file only hex, but all you need to do is load the map on your biKe with older version of Tune ECU (unless your running it on the ECU already) then run the newer version tune ecu and copy the map from your ecu and save as Hex, then you have it in both formats
Read the map, saved it as a HEX, dropped the fan cut in to 96, lowered the rev limiter to 10,700 as it was at 11k as it possibly got altered when I was having some dyno work done (tuner may have started out with a "generic" base map with different parameters), downloaded changes, saved again
When you say set at 58 do you mean with TECU connected and engine not running ie reading from test page or with engine running in diagnostics?
Mine is currently set at -12, pwalo tried to explain the relationship between the stepper and idle but I'm not sure I really get it and am almost convinced that whatever I do nothing really changes except I did manage to get it running really rough at idle by dropping the CO too far ho ho. Pushing it up seems to make little difference but I'm waiting for the use of a CO meter and then I'll have a go in earnest:
