Air Temp Compensation table
#259
Evolved Member
iTrader: (3)
Maybe I'm looking in the wrong place - but I'm having an issue with Open Loop cruise AFR's drifting a from 15.3 to 17 over time.
Is this table still valid in V7, or is it named something else...maybe "air density compensation for load and ipw"??
I cannot adjust the "air density compensation for load and ipw" table in V7 as any changes revert the cell to "0000"
Am I looking in the wrong place?
Is this table still valid in V7, or is it named something else...maybe "air density compensation for load and ipw"??
I cannot adjust the "air density compensation for load and ipw" table in V7 as any changes revert the cell to "0000"
Am I looking in the wrong place?
#260
Evolved Member
for 90550001:
<scaling name="CF128" units="Correction Factor" toexpr="x/128" frexpr="x*128" format="%.3f" min="0" max="2" inc="0.0078125" storagetype="uint8" endian="big"/>
<scaling name="TEMP" units="*C" toexpr="x-40" frexpr="x+40" format="%.0f" min="-40" max="115" inc="1" storagetype="uint16" endian="big"/>
<table name="Intake Air Temp Fuel Correction" address="38DC" category="Closed-Loop Control" type="2D" scaling="CF128">
<table name="Intake Air Temp" address="5194" type="Y Axis" elements="8" scaling="TEMP"/></table>
<scaling name="CF128" units="Correction Factor" toexpr="x/128" frexpr="x*128" format="%.3f" min="0" max="2" inc="0.0078125" storagetype="uint8" endian="big"/>
<scaling name="TEMP" units="*C" toexpr="x-40" frexpr="x+40" format="%.0f" min="-40" max="115" inc="1" storagetype="uint16" endian="big"/>
<table name="Intake Air Temp Fuel Correction" address="38DC" category="Closed-Loop Control" type="2D" scaling="CF128">
<table name="Intake Air Temp" address="5194" type="Y Axis" elements="8" scaling="TEMP"/></table>
#262
Evolved Member
for 88590015
<table name="Intake Air Temp Fuel Correction" address="30FE" category="Closed-Loop Control" type="2D" scaling="CF128">
<table name="Intake Air Temp" address="714A" type="Y Axis" elements="8" scaling="TEMP"/>
</table>
<table name="Intake Air Temp Fuel Correction" address="30FE" category="Closed-Loop Control" type="2D" scaling="CF128">
<table name="Intake Air Temp" address="714A" type="Y Axis" elements="8" scaling="TEMP"/>
</table>
#267
I am having similar issues as you are with the "air density compensation for load and ipw" table. I can edit the scale to allow me to edit the table but it seems this table should be left alone from all that I've read. Not sure of which table is the best to edit to help me address my root problem, which is that I'm leaning out when the temp drops.
Last edited by misterchonger; Nov 20, 2014 at 09:00 AM.
#269
#270
Evolved Member
iTrader: (5)
With the colder weather have you turned down the boost controller any? You could possibly be higher loads in the upper rpm range that you were not before and your fuel table may not be setup to anticipate this. Turn your mbc down a touch and you'll more than likely see your afr's fall back in line.
I tuned my car to run load based boost control, and to run the same load curve in the winter that I do during the summer it equates to 1.5 to 2.5 psi less during the winter where I live (depending on temperature).