Datalogging with a Palm...it CAN be done!
10-23-2007, 03:42 PM
#61
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Here is my PalmLog Environment Setup, as requested. It works for me on my MSPNP MM9093, but I cannot guarantee the values. In fact, I can't remember how I got all of them. I did a bit of reading on the msefi forum.
MAP-Off: 9.0
Map-Sc: 0.984
C-Bias: 2490
A-Bias: 2490
Cool-A: 1.222E-3
Cool-B: 2.776E-4
Cool-C: 4.196E-8
Air-A: 1.506E-3
Air-B: 2.250E-4
Air-C: 1.247E-7
WB-Off: 10.00
WB-Sc: 2.00
RTU Char: R
Bytes 39
I have my "boost in psi," "Fahr," and "diywb" boxes clicked; I am using the Techedge diywb.
MAP-Off: 9.0
Map-Sc: 0.984
C-Bias: 2490
A-Bias: 2490
Cool-A: 1.222E-3
Cool-B: 2.776E-4
Cool-C: 4.196E-8
Air-A: 1.506E-3
Air-B: 2.250E-4
Air-C: 1.247E-7
WB-Off: 10.00
WB-Sc: 2.00
RTU Char: R
Bytes 39
I have my "boost in psi," "Fahr," and "diywb" boxes clicked; I am using the Techedge diywb.
Sensor datasheet here:
http://www.freescale.com/files/senso...50A.pdf?fpsp=1
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10-23-2007, 09:30 PM
#63
OK, I believe all of the above is correct except for the MAP sensor offset and scale. The offset should be 20kPa and the scale should be .961 kPa/ADC.
Sensor datasheet here:
http://www.freescale.com/files/senso...50A.pdf?fpsp=1
Sensor datasheet here:
http://www.freescale.com/files/senso...50A.pdf?fpsp=1
Still new so there's a possibility that Megatune is off too. =/
(just have the MAP set up in the Configurator, nothing more that I know of)
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10-23-2007, 09:59 PM
#64
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Those are the 2.5 bar settings.
You have a 4 bar sensor, right? 4 bar settings: https://www.miataturbo.net/megasquirt-18/whos-got-mapdaddy-13504/
You have a 4 bar sensor, right? 4 bar settings: https://www.miataturbo.net/megasquirt-18/whos-got-mapdaddy-13504/
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10-23-2007, 11:24 PM
#65
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OK, I believe all of the above is correct except for the MAP sensor offset and scale. The offset should be 20kPa and the scale should be .961 kPa/ADC.
Sensor datasheet here:
http://www.freescale.com/files/senso...50A.pdf?fpsp=1
Sensor datasheet here:
http://www.freescale.com/files/senso...50A.pdf?fpsp=1
scale .964
offset 9.108
It has nothing to do with my math being faulty earlier. It has to do with my faulty assumption that MegaTune's kpafactor file is accurate.
Of course, looks like I DID get the slope right (I'll consider 3 thousandths of error to be more than acceptable for this assignment). The error ends up being in the offset.
Somebody with a 2.5 bar, try it and report back.
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Last edited by Ben; 10-23-2007 at 11:36 PM.
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10-24-2007, 05:47 AM
#66
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Well, I had been using offset of 9 and scale of 0.984, and hadn't noticed any discrepancy. I'll give 9.108 and 0.964 a try and see how much of a difference it reads.
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10-24-2007, 07:35 AM
#67
After learning more data... These numbers should be more correct than anything posted previously
scale .964
offset 9.108
It has nothing to do with my math being faulty earlier. It has to do with my faulty assumption that MegaTune's kpafactor file is accurate.
Of course, looks like I DID get the slope right (I'll consider 3 thousandths of error to be more than acceptable for this assignment). The error ends up being in the offset.
Somebody with a 2.5 bar, try it and report back.
scale .964
offset 9.108
It has nothing to do with my math being faulty earlier. It has to do with my faulty assumption that MegaTune's kpafactor file is accurate.
Of course, looks like I DID get the slope right (I'll consider 3 thousandths of error to be more than acceptable for this assignment). The error ends up being in the offset.
Somebody with a 2.5 bar, try it and report back.
Now my last discrepency is my CLT. Reading 33 on the palm and 45 in MegaTune. Stock Mazda sensor, wondering if I have the coolant settings wrong. (using what's up there)
Using AusieDriver's EasyTherm settings of:
-4F 16200
86F 2450
176F 384
Any clues?
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10-24-2007, 08:22 AM
#68
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I pulled those Cool-A,B,C values from the easytherm file using the MSPNP inputs of:
-4F 16150
104F 1150
176 320
A= 1.222495E-03 B=2.775695E-04 C= 4.196125E-08 (from MSPNP9093 w AFM thermfactor.ini).
However, with:
-4 16150
104 1150
176 330
A= 1.131957E-03 B=2.943506E-04 C= -3.725285E-08 (from MSPNP9093 w/o AFM thermfactor.ini)
Looks like my AIR values for MAT are screwed up as well. I can't figure out where those values came from, but the GM IAT sensor I'm using (AFM delete) should have Air values of :
A= 6.034498E-04 B=4.181235E-04 C= -1.094738E-06 (from MSPNP9093 w/o AFM matfactor.ini).
I can't seem to find an appropriate matfactor.ini for use with the AFM...they all seem to have the same values as thermfactor.ini. Do the stock CLT and IAT (in AFM) sensors have the same temp/resistance relationship?
BTW: I'm glad some more people are jumping on this. Makes me revisit all the screw-ups from rushing this to make it "work," or rather show that it could work
-4F 16150
104F 1150
176 320
A= 1.222495E-03 B=2.775695E-04 C= 4.196125E-08 (from MSPNP9093 w AFM thermfactor.ini).
However, with:
-4 16150
104 1150
176 330
A= 1.131957E-03 B=2.943506E-04 C= -3.725285E-08 (from MSPNP9093 w/o AFM thermfactor.ini)
Looks like my AIR values for MAT are screwed up as well. I can't figure out where those values came from, but the GM IAT sensor I'm using (AFM delete) should have Air values of :
A= 6.034498E-04 B=4.181235E-04 C= -1.094738E-06 (from MSPNP9093 w/o AFM matfactor.ini).
I can't seem to find an appropriate matfactor.ini for use with the AFM...they all seem to have the same values as thermfactor.ini. Do the stock CLT and IAT (in AFM) sensors have the same temp/resistance relationship?
BTW: I'm glad some more people are jumping on this. Makes me revisit all the screw-ups from rushing this to make it "work," or rather show that it could work
Last edited by Atlanta93LE; 10-24-2007 at 08:38 AM.
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10-24-2007, 08:34 AM
#69
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Air-A: 1.506E-3
Air-B: 2.250E-4
Air-C: 1.247E-7
Air-B: 2.250E-4
Air-C: 1.247E-7
Cool-A: 1.222E-3
Cool-B: 2.776E-4
Cool-C: 4.196E-8
Cool-B: 2.776E-4
Cool-C: 4.196E-8
and CLT under ....../thermfactor.inc
Granted, I'm actually yet to take a drive in my car w/ those settings, but at idle in my garage those settings jived perfectly with megatune.
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10-24-2007, 08:40 AM
#70
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That's where I'm looking now, and they're def. way off. I had never noticed anything weird though while monitoring with the palm with my "old" settings, but I've been more concerned about CLT than MAT.
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10-24-2007, 08:45 AM
#71
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I see what you're doing, I think... The default files are coded around the GM sensor. That's why they have the same values. 
You need to look in the MSPNP W/O AFM folder, the "your car" folder that shows your customized settings, not in the main MegaTune folder which only shows default settings.
You need to look in the MSPNP W/O AFM folder, the "your car" folder that shows your customized settings, not in the main MegaTune folder which only shows default settings.
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10-24-2007, 08:48 AM
#72
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I see what you're doing, I think... The default files are coded around the GM sensor. That's why they have the same values.
You need to look in the MSPNP W/O AFM folder, the "your car" folder that shows your customized settings, not in the main MegaTune folder which only shows default settings.
You need to look in the MSPNP W/O AFM folder, the "your car" folder that shows your customized settings, not in the main MegaTune folder which only shows default settings.
W/O AFM:
Code:
C:\Program Files\MegaSquirt\MSPNP MM9093 without AFM\mtCfg\matfactor.inc ; Generated using EasyTherm4.exe, ; ; GM IAT ; ; File generated for use with stock 2490 ohm resistor at R4 ; ; Steinhart-Hart coefficients: A= 6.034498E-04 B=4.181235E-04 C= -1.094738E-06 ; ; Input Data: Temp, degF Resistance ; 48 7000 ; 87 1930 ; 146 560 ...
Code:
C:\Program Files\MegaSquirt\MSPNP MM9093 with AFM\mtCfg\matfactor.inc ; Generated using EasyTherm4.exe, ; ; Air Temp Thermistor Comment Field ; ; File generated for use with stock 2490 ohm resistor at R4 ; ; Steinhart-Hart coefficients: A= 1.222495E-03 B=2.775695E-04 C= 4.196125E-08 ; ; Input Data: Temp, degF Resistance ; -4 16150 ; 104 1150 ; 176 320 ...
Last edited by Atlanta93LE; 10-24-2007 at 10:13 AM.
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10-24-2007, 08:59 AM
#73
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OK, so mazda uses the same sensor for coolant and air temp. It's just a thermistor right
<edit> and I believe GM uses the same thermistor for both air and coolant temps too, and that's why the MT default settings (which defaults to GM sensors) show the same Steinhart-Hart coefficients for both AIT and CLT
<edit> and I believe GM uses the same thermistor for both air and coolant temps too, and that's why the MT default settings (which defaults to GM sensors) show the same Steinhart-Hart coefficients for both AIT and CLT
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10-24-2007, 09:51 AM
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The correct ones? See post 69.
CJ, don't be rediculous. We did all the hard work, and anyone w/ a mspnp w/ a 2.5bar sensor can simply copy the settings listed.
And I *think* I've got the 4 bar map settings, but it's too hard to drive and check in boost, especially because it's wet out. I'll post the new settings as soon as I can verify.
CJ, don't be rediculous. We did all the hard work, and anyone w/ a mspnp w/ a 2.5bar sensor can simply copy the settings listed.
And I *think* I've got the 4 bar map settings, but it's too hard to drive and check in boost, especially because it's wet out. I'll post the new settings as soon as I can verify.
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