AFR calibration map
Jun 17, 2010, 07:05 PM
#1
AFR calibration map
Hi All,
I have been sitting on this for a while, I am sure others have posted information about it, or even the maps themselves.
Basically this adjusts the Fuel Map lookup by adding or subtracting a percentage.
If you are interested, look at the changes between 52680017 and 52680018
It will appear in the Misc category, eventually when it gets included in ECUFlash it will be moved to the Fuel category
52680015:
53040010:
I doubt it will be very useful to people, but something to think about
Cheers
D.
I have been sitting on this for a while, I am sure others have posted information about it, or even the maps themselves.
Basically this adjusts the Fuel Map lookup by adding or subtracting a percentage.
If you are interested, look at the changes between 52680017 and 52680018
It will appear in the Misc category, eventually when it gets included in ECUFlash it will be moved to the Fuel category
52680015:
Code:
<scaling name="Percent128" units="%" toexpr="x*100/128" frexpr="x*128/100" format="%.1f" min="0" max="100" inc="2" storagetype="uint8" endian="big"/> <table name="Calibration Fuel Map" category="Misc" address="576d3" type="3D" swapxy="true" scaling="Percent128"> <table name="Load" address="617d6" type="X Axis" elements="41" scaling="Load"/> <table name="RPM" address="617aa" type="Y Axis" elements="19" scaling="RPM"/> </table>
Code:
<scaling name="Percent128" units="%" toexpr="x*100/128" frexpr="x*128/100" format="%.1f" min="0" max="100" inc="2" storagetype="uint8" endian="big"/> <table name="Calibration Fuel Map" category="Misc" address="576d7" type="3D" swapxy="true" scaling="Percent128"> <table name="Load" address="61812" type="X Axis" elements="41" scaling="Load"/> <table name="RPM" address="617e6" type="Y Axis" elements="19" scaling="RPM"/> </table>
Cheers
D.
Jun 17, 2010, 07:43 PM
#3
I am assuming that adding to the map increases fueling in that area of the map and subtracting a percentage from a area or value decreases fueling in that area...
Secondly, I wonder what would happen if you change all values to a static value of: 102.3
Secondly, I wonder what would happen if you change all values to a static value of: 102.3
Jun 17, 2010, 09:25 PM
#6
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I'm thinking it is some sort of injector calibration. So, if they change injectors, they simple have to make a new one of these and not have to re-tune the car (and possibly re-tune 20 other configurations).
Jun 18, 2010, 12:22 AM
#7
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I have that as "injectorTime" in ms, not percent128 and the table being called "Injector Compensation Pulsewidth Adder" instead.
Not sure which one is actually correct though.
- Bryan
Not sure which one is actually correct though.
- Bryan
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Jun 18, 2010, 06:40 AM
#9
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if it is indeed a % modifier for the fuel map... wouldn't this be a very easy way to adjust the entire fuel map based off of something like the GM flex fuel sensor? may not be the "best" way to do it, but could be better than nothing for ethanol blend changes.
Jun 18, 2010, 08:35 AM
#11
Like I said, I'll static the number 102.3 (max) in the table and see what happens...
I think this table accounts for why we need to richen the **** out of our spool up, since that table is lower in those areas... This might make tuning more linear...
Jun 18, 2010, 10:07 AM
#14
Well one thing I noticed...
My idle LTFT went from -0.5 to -7.1...
Cruise went a little bit negative...
I'll do a comparison latter today... vs stock map and everything set to 102.3...
Also try everything about 100-110 load one to be 102.3 and leave everthing 1000rpm and below alone...
My idle LTFT went from -0.5 to -7.1...
Cruise went a little bit negative...
I'll do a comparison latter today... vs stock map and everything set to 102.3...
Also try everything about 100-110 load one to be 102.3 and leave everthing 1000rpm and below alone...
