can I rescale MAF past 1600 Hz ?
#1
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can I rescale MAF past 1600 Hz ?
as title says, is it possible ? if yes, how can it be done ?
if I klick the table and enter any value with "=", it doesn't allow me and puts '0' in there
if I klick the table and enter any value with "=", it doesn't allow me and puts '0' in there
#3
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Look for these tables...
<table name="MAF Scaling" category="Global Fuel Settings" type="2D" level="3" scaling="AirFlow8">
<table name="AirFlowHZ" type="Y Axis" elements="21" scaling="MAFHz"/>
</table>
<table name="MAF Compensation" category="Global Fuel Settings" type="2D" level="3" scaling="Percent (128)">
<table name="MAF Hz" type="Y Axis" elements="21" scaling="MAFHz"/>
</table>
and the correct scaling is...
<scaling name="MAFHz" units="Hz" toexpr="6.29*x/64" frexpr="x*64/6.29" format="%.0f" min="0" max="5000" inc="1" storagetype="int16" endian="big"/>
<table name="MAF Scaling" category="Global Fuel Settings" type="2D" level="3" scaling="AirFlow8">
<table name="AirFlowHZ" type="Y Axis" elements="21" scaling="MAFHz"/>
</table>
<table name="MAF Compensation" category="Global Fuel Settings" type="2D" level="3" scaling="Percent (128)">
<table name="MAF Hz" type="Y Axis" elements="21" scaling="MAFHz"/>
</table>
and the correct scaling is...
<scaling name="MAFHz" units="Hz" toexpr="6.29*x/64" frexpr="x*64/6.29" format="%.0f" min="0" max="5000" inc="1" storagetype="int16" endian="big"/>
Last edited by jedibow; Aug 27, 2014 at 10:13 PM. Reason: added scaling
#4
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couldn't quite understand, I have to replace this whole section
with this
in my rom's xml ?
is that formula same for every rom ? I use 96530706 V7
<table name="MAF Scaling" category="Global Fuel Settings" type="2D" level="3" scaling="AirFlow8">
<table name="AirFlowHZ" type="Y Axis" elements="21" scaling="MAFHz"/>
</table>
<table name="MAF Compensation" category="Global Fuel Settings" type="2D" level="3" scaling="Percent (128)">
<table name="MAF Hz" type="Y Axis" elements="21" scaling="MAFHz"/>
</table>
<table name="AirFlowHZ" type="Y Axis" elements="21" scaling="MAFHz"/>
</table>
<table name="MAF Compensation" category="Global Fuel Settings" type="2D" level="3" scaling="Percent (128)">
<table name="MAF Hz" type="Y Axis" elements="21" scaling="MAFHz"/>
</table>
<scaling name="MAFHz" units="Hz" toexpr="6.29*x/64" frexpr="x*64/6.29" format="%.0f" min="0" max="5000" inc="1" storagetype="int16" endian="big"/>
is that formula same for every rom ? I use 96530706 V7
#5
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Interesting I was about to ask the exact same question. My basically stock evo peaks out at 1900hz. And im trying to tune it with a bit of an un orthodox techinique ill probably get flammed for Im gonna try and enter this scaling into the my xml and tell you guys if my car blows up ok.
#9
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Just click edit on the map and edit the map def, select scaling for the mafhz and edit the mafhz scaling change
"display to ROM f(x)" from "64/(6.29*x)" to "x*64/6.29"
"display to ROM f(x)" from "64/(6.29*x)" to "x*64/6.29"
max value it allows to enter is 3220 Hz
will log 2 byte airflow and see where my car peaks at. hope 2.3+holset won't max it out
thanks guys
#14
Evolved Member
That looks right,
but
It is not a good idea to edit you xml using EcuFlash to do the editing, as it will delete any comments and notes embedded in the xml, and space/tabs.
Essentially, it will trash your xml down to only what EcuFlash needs to work.
So, if you were using one of my xmls for example, which have lots of tuning notes embedded in the definition, those comments and notes will be deleted.
That is why I always advocate using Notepad or Notepad++ to edit a definition file.
but
It is not a good idea to edit you xml using EcuFlash to do the editing, as it will delete any comments and notes embedded in the xml, and space/tabs.
Essentially, it will trash your xml down to only what EcuFlash needs to work.
So, if you were using one of my xmls for example, which have lots of tuning notes embedded in the definition, those comments and notes will be deleted.
That is why I always advocate using Notepad or Notepad++ to edit a definition file.