Fuel Tuning - Open Loop Temp Threshold definition?
Fuel Tuning - Open Loop Temp Threshold definition?
I have been rereading a bunch of stuff including Merlin's guide. I don't seem to have the
Fuel Tuning - Open Loop Temp Threshold
in my definitions, at least not named that. has it become something else, and the guide is slightly outdated or named differently?
In the guide its a 1D table, stock setting of 20c and that with bigger cams suggests to reset to 40c. I have some weird warm start idle issues so I was going to up this value as suggested.
Fuel Tuning - Open Loop Temp Threshold
in my definitions, at least not named that. has it become something else, and the guide is slightly outdated or named differently?
In the guide its a 1D table, stock setting of 20c and that with bigger cams suggests to reset to 40c. I have some weird warm start idle issues so I was going to up this value as suggested.
I don't have that one either.
I have:
Min Coolant Temp to use AFR Table (that is from the MrFred mod to use the WB to control AFR)
Min Temp for Lean Spool
Do you guys have the definition that I should use that is current for Open Loop Temp Threshold or Min Temp for Closed Loop?
I have:
Min Coolant Temp to use AFR Table (that is from the MrFred mod to use the WB to control AFR)
Min Temp for Lean Spool
Do you guys have the definition that I should use that is current for Open Loop Temp Threshold or Min Temp for Closed Loop?
In don't have it in tephra rom also. In stock ROM (9417*) that was:
adress: 15aa
scaling: temp
Stock threshold was 45f, or 7c. I verified in v7, the value is still there but I cannot confirm that it's still used. You could test it, I'd bet that this adress isn't used for something else, as the value is still the same than before...
adress: 15aa
scaling: temp
Stock threshold was 45f, or 7c. I verified in v7, the value is still there but I cannot confirm that it's still used. You could test it, I'd bet that this adress isn't used for something else, as the value is still the same than before...
Last edited by domyz; Nov 13, 2012 at 04:09 PM.
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It seems that when cold the car warms up nice and solid, idle remains high and smooth/strong. I don't need to but I wait about a 10 seconds or so before I pull out of the driveway. Sometimes (if fiddling with the laptop) it gets a full 30 seconds. Then it transitions imperceptibly into daily driving.
If I go a few miles, warmed, and then park for lunch or an errand when I return to the car after a short period, when it starts it has difficulty holding idle at my min idle setting of ~900. I seems to bob around and hunt a bit below that. That makes my oil light flicker and generally sounds rough.
Some who love the lope sound would like it, but I have had super heavy lope for a while now, and I am all set with the novelty. I returned my mivec tune in that area that promotes simple parking lot driving.
So I am trying to learn what factors are impacting the car, when its actually warm, but not quite enough to be fully warmed up. There seems to be a gap in there, and I figured there were some values I couldn't modify that would close that gap.
If I go a few miles, warmed, and then park for lunch or an errand when I return to the car after a short period, when it starts it has difficulty holding idle at my min idle setting of ~900. I seems to bob around and hunt a bit below that. That makes my oil light flicker and generally sounds rough.
Some who love the lope sound would like it, but I have had super heavy lope for a while now, and I am all set with the novelty. I returned my mivec tune in that area that promotes simple parking lot driving.

So I am trying to learn what factors are impacting the car, when its actually warm, but not quite enough to be fully warmed up. There seems to be a gap in there, and I figured there were some values I couldn't modify that would close that gap.
It seems that when cold the car warms up nice and solid, idle remains high and smooth/strong. I don't need to but I wait about a 10 seconds or so before I pull out of the driveway. Sometimes (if fiddling with the laptop) it gets a full 30 seconds. Then it transitions imperceptibly into daily driving.
If I go a few miles, warmed, and then park for lunch or an errand when I return to the car after a short period, when it starts it has difficulty holding idle at my min idle setting of ~900. I seems to bob around and hunt a bit below that. That makes my oil light flicker and generally sounds rough.
Some who love the lope sound would like it, but I have had super heavy lope for a while now, and I am all set with the novelty. I returned my mivec tune in that area that promotes simple parking lot driving.
So I am trying to learn what factors are impacting the car, when its actually warm, but not quite enough to be fully warmed up. There seems to be a gap in there, and I figured there were some values I couldn't modify that would close that gap.
If I go a few miles, warmed, and then park for lunch or an errand when I return to the car after a short period, when it starts it has difficulty holding idle at my min idle setting of ~900. I seems to bob around and hunt a bit below that. That makes my oil light flicker and generally sounds rough.
Some who love the lope sound would like it, but I have had super heavy lope for a while now, and I am all set with the novelty. I returned my mivec tune in that area that promotes simple parking lot driving.
So I am trying to learn what factors are impacting the car, when its actually warm, but not quite enough to be fully warmed up. There seems to be a gap in there, and I figured there were some values I couldn't modify that would close that gap.
Last edited by domyz; Nov 14, 2012 at 07:02 PM.
Any thoughts based on seeing this....
Not that I know of for this issue. I did edit one of the tables in the ISCV Control section when I had run way idle issues upon first starting up my build. I had some threads on here for that. It turned out to be a badly leaking TB. There are so many tables here I wouldn't know which one to experiment with and why.
Any thoughts based on seeing this....

Any thoughts based on seeing this....

Code:
<scaling name="ScaleBase64Adder" units="Mult. Factor" toexpr="(x+64)/64" frexpr="64*(x-1)" format="%.2f" min="0" max="10" inc="0.05" storagetype="uint8" endian="big"/>
<scaling name="ISCV_AX2_8" units="% Demand" toexpr="x*100/255" frexpr="x*255/100" format="%.1f" min="0" max="200" inc="0.5" storagetype="uint8" endian="big"/>
<scaling name="ISCV_AX2_16" units="% Demand" toexpr="x*100/255" frexpr="x*255/100" format="%.1f" min="0" max="200" inc="0.5" storagetype="uint16" endian="big"/>
<table name="ISCV Demand Target Idle Trim (sub_1ECF6)" category="ISCV Control" address="3dec" type="2D" level="2" scaling="ISCV_AX2_8">
<table name="Target Idle Deviation" address="6c9e" type="Y Axis" elements="9" scaling="RPMTarget"/>
</table>
<table name="Target Idle ISCV Trim Adjust Frequency" category="ISCV Control" address="14c2" type="1D" level="2" scaling="Time"/>
<table name="ISCV Demand Below 500 RPM Idle Recovery Adder (sub_1E2C8)" category="ISCV Control" address="1516" type="1D" level="2" scaling="ISCV_AX2_16"/>
<table name="ISCV Demand Startup CTS Adder (sub_1EBB8)" category="ISCV Control" address="3d60" type="2D" level="2" scaling="ISCV_AX2_8">
<table name="Coolant Temp" address="6fde" type="Y Axis" elements="8" scaling="Temp"/>
</table>
<table name="ISCV Demand General CTS Subtractor (sub_1EBE6)" category="ISCV Control" address="3e0a" type="2D" level="2" scaling="ISCV_AX2_8">
<table name="Coolant Temp" address="6fde" type="Y Axis" elements="8" scaling="Temp"/>
</table>
<table name="ISCV Demand Baro Adder (FFFF6E98) (sub_1E1EE)" category="ISCV Control" address="3dda" type="2D" level="2" scaling="ISCV_AX2_8">
<table name="Baro" address="6e28" type="Y Axis" elements="5" scaling="Baro16"/>
</table>
<table name="ISCV Demand RPM Adder* (sub_1EFC0)" category="ISCV Control" address="41d8" type="2D" level="2" scaling="ISCV_AX2_8">
<table name="RPM" address="6b7a" type="Y Axis" elements="10" scaling="RPM"/>
</table>
<table name="ISCV Demand TPS Subtractor* (sub_1EFC0)" category="ISCV Control" address="6810" type="2D" level="2" scaling="ISCV_AX2_8">
<table name="Shifted TPS" address="810c" type="Y Axis" elements="11" scaling="ThrottlePercentage"/>
</table>
<table name="ISCV Demand RPM Adder [rpm > 4500, load > 170, speed > 12 mph] (sub_1EFC0)" category="ISCV Control" address="65de" type="2D" level="2" scaling="ISCV_AX2_8">
<table name="RPM" address="7fb0" type="Y Axis" elements="10" scaling="RPM"/>
</table>
<table name="ISCV Demand CTS Adder AC Off - Neutral (sub_1F1F8, sub_1EA0C, sub_1F596) [sub_1EFC0]" category="ISCV Control" address="3d38" type="2D" level="2" scaling="ISCV_AX2_8">
<table name="Coolant Temp" address="70c2" type="Y Axis" elements="8" scaling="Temp"/>
</table>
<table name="ISCV Demand CTS Adder #2** (Post WOT) (sub_1F1F8) [sub_1EFC0]" category="ISCV Control" address="54e6" type="2D" level="2" scaling="ISCV_AX2_8">
<table name="Coolant Temp" address="7070" type="Y Axis" elements="8" scaling="Temp"/>
</table>
<table name="ISCV Demand CTS Adder AC On - Drive (sub_1F2C6, 1F596) [sub_1EFC0]" category="ISCV Control" address="51b0" type="2D" level="2" scaling="ISCV_AX2_8">
<table name="Coolant Temp" address="70c2" type="Y Axis" elements="8" scaling="Temp"/>
</table>
<table name="ISCV Demand CTS Adder AC On - Neutral (sub_1F2C6) [sub_1EFC0]" category="ISCV Control" address="3d4c" type="2D" level="2" scaling="ISCV_AX2_8">
<table name="Coolant Temp" address="70c2" type="Y Axis" elements="8" scaling="Temp"/>
</table>
<table name="ISCV Demand CTS Adder #2*** (Post WOT) (sub_1F2C6) [sub_1EFC0]" category="ISCV Control" address="5502" type="2D" level="2" scaling="ISCV_AX2_8">
<table name="Coolant Temp" address="7070" type="Y Axis" elements="8" scaling="Temp"/>
</table>
<table name="ISCV Demand RPM Adder (Moderated by Baro, IATS) (FFFF6EA8) (sub_204B6) [sub_1EFC0]" category="ISCV Control" address="672a" type="2D" level="2" scaling="ISCV_AX2_8">
<table name="RPM" address="802a" type="Y Axis" elements="10" scaling="RPM"/>
</table>
<table name="ISCV Demand Baro Adder**** (FFFF7C0E) (sub_1F6E6) [sub_1EFC0]" category="ISCV Control" address="6adc" type="2D" level="2" scaling="ISCV_AX2_8">
<table name="Baro" address="6e28" type="Y Axis" elements="5" scaling="Baro16"/>
</table>
<table name="ISCV Demand IATS Adder**** (FFFF7C0E) (sub_1F6E6) [sub_1EFC0]" category="ISCV Control" address="6ae8" type="2D" level="2" scaling="ISCV_AX2_8">
<table name="Intake Air Temp" address="714a" type="Y Axis" elements="8" scaling="Temp"/>
</table>
<table name="ISCV Demand TPS Adder, AC off (FFFF6E84) (mattjin fuel cut delay)" category="ISCV Control" address="3d6e" type="2D" level="1" scaling="ISCV_AX2_8">
<table name="TPS" address="6f9a" type="Y Axis" elements="7" scaling="ThrottlePercentage"/>
</table>
<table name="ISCV Demand TPS Adder, AC on (FFFF6E84) (mattjin fuel cut delay)" category="ISCV Control" address="3d82" type="2D" level="1" scaling="ISCV_AX2_8">
<table name="TPS" address="6f9a" type="Y Axis" elements="7" scaling="ThrottlePercentage"/>
</table>
<table name="ISCV Demand Power Steering Baro Adder**** (FFFF7C0E) (sub_1F6E6) [sub_1EFC0]" category="ISCV Control" address="6adc" type="2D" level="2" scaling="ISCV_AX2_8">
<table name="Baro" address="6e28" type="Y Axis" elements="5" scaling="Baro16"/>
</table>
<table name="ISCV Demand CTS Adder (FFFF6E84)" category="ISCV Control" address="4e56" type="2D" level="1" scaling="ISCV_AX2_8">
<table name="Coolant Temp" address="6fde" type="Y Axis" elements="8" scaling="Temp"/>
</table>
<table name="Baro Mult. Factor for ISCV Demand Adder FFFF6E84" category="ISCV Control" address="6b68" type="2D" level="1" scaling="ScaleBase64Adder">
<table name="Baro" address="6e4e" type="Y Axis" elements="5" scaling="Baro16"/>
</table>
<table name="Idle Stepper Lookup Table" category="ISCV Control" address="3e31" type="3D" scaling="ISCVSteps">
<table name="Coolant Temp" address="7164" type="X Axis" elements="8" scaling="Temp"/>
<table name="ISCV Demand" address="717e" type="Y Axis" elements="27" scaling="ISCV_AX2_16"/>
</table>
Those are the "real" ISCV tables. The "desired ISCV initial step position" doesn't have the correct units for the right column.
The table you're looking for with the proper scaling is "ISCV Demand CTS Adder AC On - Neutral"
Be polite with the table, little changes really work well
Last edited by domyz; Nov 15, 2012 at 08:23 AM.



