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Evo X Engine Management / Tuning Forums Discuss the major engine management systems.

The 3xMAP/MAF tables

   
Old Feb 5, 2012 | 01:33 PM
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Load basically is the volume of air.

the VE is built into the 3xMAP tables...
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Old Mar 15, 2012 | 11:18 AM
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does anyone have the logging addresses for MAP Calc and MAF Calc for a 2010 GSR (55570006)
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Old Mar 16, 2012 | 12:38 AM
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MAPCalcs: 8087CE
MAFCalcs: 808F88
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Old Mar 16, 2012 | 07:34 AM
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Originally Posted by RS200Z
MAPCalcs: 8087CE
MAFCalcs: 808F88
thank you!
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Old Jun 1, 2012 | 10:25 AM
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Originally Posted by RS200Z
MAPCalcs: 8087CE
MAFCalcs: 808F88
Are these the same addresses for MAPCalcs and MAFCalcs for the 2008?
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Old Jun 1, 2012 | 10:07 PM
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Code:
<DataListItem DataLog="N" Color="" Display="MAPCalcs" LogReference="MAPCalcs" RequestID="238087b6" Eval="x*100/16384" Unit="load" MetricEval="" MetricUnit="" ResponseBytes="2" GaugeMin="0" GaugeMax="255" ChartMin="0" ChartMax="255" ScalingFactor="1" Notes="" Priority="1" Visible="False" />
<DataListItem DataLog="N" Color="" Display="MAFCalcs" LogReference="MAFCalcs" RequestID="23808F60" Eval="x*100/16384" Unit="load" MetricEval="" MetricUnit="" ResponseBytes="4" GaugeMin="0" GaugeMax="255" ChartMin="0" ChartMax="255" ScalingFactor="1" Notes="" Priority="1" Visible="False" />
The are for 5269 - but should be the same as 5268 - let me know if you
get odd numbers and ill confirm
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Old Jun 2, 2012 | 08:54 PM
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Originally Posted by tephra
Code:
<DataListItem DataLog="N" Color="" Display="MAPCalcs" LogReference="MAPCalcs" RequestID="238087b6" Eval="x*100/16384" Unit="load" MetricEval="" MetricUnit="" ResponseBytes="2" GaugeMin="0" GaugeMax="255" ChartMin="0" ChartMax="255" ScalingFactor="1" Notes="" Priority="1" Visible="False" />
<DataListItem DataLog="N" Color="" Display="MAFCalcs" LogReference="MAFCalcs" RequestID="23808F60" Eval="x*100/16384" Unit="load" MetricEval="" MetricUnit="" ResponseBytes="4" GaugeMin="0" GaugeMax="255" ChartMin="0" ChartMax="255" ScalingFactor="1" Notes="" Priority="1" Visible="False" />
The are for 5269 - but should be the same as 5268 - let me know if you
get odd numbers and ill confirm
They are good
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Old Jun 2, 2012 | 09:18 PM
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Originally Posted by chetrickerman
They are good
correct, I used them today for logging. My MAP tables are smoothed out now and raised. They still need to get bumped up more I think, more testing/logging/tuning to occur soon. But the logging addresses work, thanks Tephra
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Old Jun 2, 2012 | 09:57 PM
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From: SlowCal
Originally Posted by murlo26
correct, I used them today for logging. My MAP tables are smoothed out now and raised. They still need to get bumped up more I think, more testing/logging/tuning to occur soon. But the logging addresses work, thanks Tephra
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Old Jun 3, 2012 | 07:56 PM
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All the MAFcalcs and MAPcalcs are up on my site.
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Old Jun 6, 2012 | 10:08 AM
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Originally Posted by Golden
All the MAFcalcs and MAPcalcs are up on my site.

Michael, there is something wrong with the definitions for the 2010 GSR USA model. I get an error when loading a ROM and I dont get any maps starting with the MAF scaling. Error states "Parse error at Line 332, Column 87. No Error Occured"
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Old Jun 6, 2012 | 02:07 PM
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I fixed it.
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Old Jan 3, 2014 | 12:05 PM
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Bringing back a really old thread but I flowed a stock EVO X maf so maybe this data will help you figure out some of the maf units etc.

The maf was flowed with a 1K pulldown because it seems as the ECU has this in the maf circuitry.
ignore the calc error column

Code:
                          Precision Flow Labs
                             402 E. Haven st.
                          Eaton Rapids, MI 48827
                         WWW.PRECISIONFLOWLABS.COM
 
           *** 37pt FLOW TEST FOR MASS AIR FLOW METER ***
 
DATE:  1 Feb 2013  TIME: 15:12:27  BARO: 29.386  TEMP:   70.9  HUM: 15%
Air Density: 1.1704 kg/m3
Ser No: 13C00011  Calibration: G35       24

evo 10 stock airbox with 1k pull down resistor
 
ACTUAL     AVG.              PRESSURE 
 FLOW    90 SAMPS.   SIGMA     DROP       Calc       %        %
KG./Hr.    Volts     Volts    In. H2O     KGH      ERROR    NOISE
 
1552.63     4.962     .007    34.468    1335.75   -13.97      .88
1470.42     4.897     .008    31.261    1282.60   -12.77     1.01
1277.27     4.712     .010    23.611    1135.54   -11.10     1.31
1092.41     4.510     .009    17.430     988.50    -9.51     1.31
 932.81     4.304     .009    12.649     852.91    -8.57     1.31
 797.69     4.113     .011     9.435     739.52    -7.29     1.62
 681.87     3.940     .010     7.070     647.17    -5.09     1.54
 584.10     3.770     .008     5.360     564.19    -3.41     1.25
 499.61     3.606     .010     4.054     491.28    -1.67     1.75
 428.97     3.456     .008     3.111     430.66      .39     1.45
 368.13     3.302     .009     2.372     373.70     1.51     1.76
 314.81     3.162     .010     1.813     326.93     3.85     1.96
 270.24     3.030     .010     1.413     286.62     6.06     2.09
 231.28     2.897     .010     1.069     249.82     8.02     2.07
 198.01     2.769     .010      .831     217.75     9.97     2.16
 170.42     2.652     .011      .647     191.06    12.11     2.53
 146.69     2.544     .011      .519     168.69    15.00     2.68
 125.72     2.432     .012      .394     147.63    17.42     2.97
 106.61     2.322     .012      .305     128.87    20.88     3.10
  91.53     2.230     .011      .237     114.47    25.06     2.98
  79.95     2.154     .012      .197     103.54    29.50     3.18
  67.74     2.062     .011      .139      91.30    34.78     3.07
  58.08     1.983     .012      .107      81.63    40.55     3.53
  49.71     1.909     .011      .079      73.18    47.20     3.40
  42.63     1.841     .013      .056      66.01    54.84     3.99
  37.09     1.786     .010      .041      60.48    63.05     3.29
  31.58     1.724     .012      .019      54.74    73.33     3.96
  28.72     1.690     .010      .008      51.70    80.01     3.38
  25.89     1.651     .010     -.007      48.43    87.03     3.53
  22.18     1.601     .009     -.016      44.40   100.14     3.23
  18.32     1.541     .010     -.015      39.81   117.24     3.55
  15.10     1.493     .009     -.040      36.46   141.43     3.32
  12.24     1.443     .006     -.044      33.14   170.80     2.34
   8.38     1.365     .002     -.044      28.38   238.87      .94
   6.73     1.326     .003     -.055      26.19   289.35     1.05
   4.89     1.277     .003     -.051      23.65   383.40     1.29
   0.00     1.157     .001     0.000      18.19     0.00     0.00
 
 
This flow test performed by:_____________________________
 
 
This flow test verified by:_____________________________
 
* This flow Meter test was performed using standards that are Traceable to The National Institute 
   of Standards and Technology
* The uncertainty of the flow rate is 0.19% at a 95% confidence level
  
*
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Old Jan 3, 2014 | 12:09 PM
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I'm trying to come up with a blow-thru maf solution for the evo X. Need someone to do some testing with a maf.. Here is the transfer function for the maf they would be using..

http://www.pmas-maf.com/resources/PFLHPXN2GT4.xls
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Old Jan 3, 2014 | 12:53 PM
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Originally Posted by tephra
Load basically is the volume of air.

the VE is built into the 3xMAP tables...
From what I've seen in most mass air ecu strategies Ford, GM, Nissan, toyota etc.

Load = actual airflow aka maf reading/ theoretical max engine airflow aka engine displacement * RPM * VE
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