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TephraMOD V6 - testing!

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Old Jul 25, 2009 | 09:10 PM
  #1186  
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Ok, 1byte does display realistic load values for me so I'm not sure what was going on with 2byte. Making it work with maptracer was as easy as changing the reference name to loadcalc and making loadcalc something else.

Turns out I wasn't as accurate as I thought with my crossover points for gear based boost but I found a clean pull that should help and I'll see for tomorrow. Am I right to assume that this goes to the closes crossover point? Such as if I appear to have 1=105 2=65 3=35 4=24 then I should put them in exactly as I see them?

Thanks Phenem for your help so far.
Old Jul 26, 2009 | 01:06 AM
  #1187  
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you can just log the crossover and then use the right/proper value.
Old Jul 26, 2009 | 06:48 AM
  #1188  
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Originally Posted by the_mork
I'm pretty sure ecuflash takes care of the interface part here so when you move to a 5bar or whatever you just change your scaling in your rom xml. What the ecu is shooting for isn't a boost pressure, it is shooting for a voltage from the MAP sensor. If we know what that voltage is with a scaling formula that we punch into ecuflash then it takes care of converting our human readable units to a value that represents the voltage we want.
That was the first thing that came to mind I just wanted to make sure. The evo 9 rom has a MAP Scaling table that you have to edit when you go to a JDM MAP sensor. This may be internal to the ecu. When tephra does the EDM evo 8 rom since it doesen't have a MAP sensor stock there is not table to edit. His code thus doesen't have a table and matches boost to a number 0-255d. On the user interface side (ecuflash, evoscan) one is supposed to edit the ecuflash scaling and the evoscan function to match the output of the different MAP sensor. My confusion lied in the fact that I did not assume the MAP sensor to be a linear device but I guess they are, thus a function works. I thought the table was used internal to the ecu to account for non linearities.
Old Jul 26, 2009 | 07:15 AM
  #1189  
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Any sense in waiting for v7 if you aren't going to do ECU-controlled boost?
Old Jul 26, 2009 | 10:31 AM
  #1190  
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*UNTESTED*

I did some work on the MAP sensor I bought, a 3.5 bar unit made by SSI Technologies. It is 0-50psia and works from 0.5-4.5 VDC.

The EvoScan formula is:

PHP Code:
<DataListItem DataLog="N" Color="" Display="SSI 3 BAR MAP" LogReference="SSI 3 BAR MAP" RequestID="38" Eval="0.248795*x-20.9687" Unit="psi" MetricEval="" MetricUnit="" ResponseBytes="1" GaugeMin="-14.5" GaugeMax="40" ChartMin="-14.5" ChartMax="40" ScalingFactor="1" Notes="" Priority="1" Visible="False" /> 
The ecuflash scaling that you need to add to your xml (to the top of the TephraMOD xml):

PHP Code:
<scaling name="SSI 0-50psia MAP" units="psi" toexpr="(0.248795*x)-20.9687" frexpr="(4.019373*x)+84.2810" format="%.1f" min="-14.5" max="36.254" inc="1" storagetype="uint8" endian="big"/> 
Like I said this is untested but the math works out.

I am using SSI Technologies part # : P51-50-A-B-I36-4.5V-R which you can find at digikey for $70 or so. It is rated for automotive use and is accurate to within 1% of full scale (half a psi on this application). Digikey doesn't't offer it but they offer them with packard 3 pin connectors, 50, 65, 75, and 100psi (and more) flavors, just call the manufacturer.
Old Jul 26, 2009 | 04:27 PM
  #1191  
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Hey 03' using Phenom's ROM here. Does this look about right in terms of boost?

Old Jul 26, 2009 | 06:09 PM
  #1192  
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Post a log file, not a screenshot. Can't see anything.......
Old Jul 27, 2009 | 01:42 PM
  #1193  
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Big Thanks Tephra for your mods ... Now it work great ...
But i still getting CEL P0135, is this soft related error? Or need to change o2 sensor?
And my Launch map is knocking, no matter stock or tuned (exactly the same to my tuned non knocking Hi Fuel/Ign Maps) ... How to see is it Phantom knock or not?
Old Jul 27, 2009 | 04:18 PM
  #1194  
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whats P0135?

when is it knocking? on the stat rev limitter or somewhere else?
Old Jul 27, 2009 | 04:39 PM
  #1195  
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Originally Posted by LeXcite
Big Thanks Tephra for your mods ... Now it work great ...
But i still getting CEL P0135, is this soft related error? Or need to change o2 sensor?
And my Launch map is knocking, no matter stock or tuned (exactly the same to my tuned non knocking Hi Fuel/Ign Maps) ... How to see is it Phantom knock or not?

I have found that using the launch control you need to push the accelerator slowly. For me that caused less knock.
Old Jul 27, 2009 | 05:28 PM
  #1196  
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Has anybody ever thrown a VSS on the launch limiter? My car did it numerous times, its the evo 9 rom.
Old Jul 28, 2009 | 04:29 AM
  #1197  
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Originally Posted by tephra
whats P0135?

when is it knocking? on the stat rev limitter or somewhere else?
Knockin on start rev limiter...
Old Jul 28, 2009 | 06:55 AM
  #1198  
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Originally Posted by phenem
Post a log file, not a screenshot. Can't see anything.......

Ok. Bear with me. That log was huge, even zipped and I'm not sure how to edit it down. Or do you mean open it in Excel and display as data?

Here is another pull on the way to work this AM. I have some knock to clean up and load is f'd up. (I have to read the load thread again)

Anyway, I can see WGDC, JDM MAP and gear... It's a start i guess

Thanks in advance for any tips.
Attached Files
Old Jul 29, 2009 | 09:22 AM
  #1199  
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ETA on V7 for 88590015?
Old Jul 29, 2009 | 03:31 PM
  #1200  
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No one else have CEL P0135 code? Is there any solution? 16DA is doin nothing, is there any other way?


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