How to plot a VE table

[GMPX]

Hi all,

Well we've been pretty busy in the scantool department in the latest update. Part of this update included adding DMA PID's for the E38. DMA PID's allow us to log data that is not normally available from the ECM using SAE or GM PID's.
In the scantool in the PID/system selection drop down list you will see a group called 'E38 ECM'. These are specific DMA PID's just for the E38 (E67 to follow).
A number of these PID's are aimed at taking the confusion out of the VE table make up of the E38/E67. At this stage we have not included all the VE components in the cal files that make up the VE calculation because are trying to implement a nice method of doing this, but, what we have done is added some PID's that will actually plot a real VE table in the scantool maps. (Map file is in this post to download).

There is plenty of other interesting PID's in there to log too :)

What we have found is the E38 really slows down once you get above 30 channels (I think it was 30), we are looking into this being an EFILive issue or the ECM switching to a different scan mode once a cerain number of PID's is selected. Either way, if you keep the channel count at or below 24 you will get super fast logging speeds. Be wary now that some E38 PID's take 4 channecalculationls!, so choose with care.

Cheers,
Ross

[RonC]

I can't get the zip file to unzip. When I try it says "no files to extract". What am I doing wrong?

Ron

[Blacky]

I can't get the zip file to unzip. When I try it says "no files to extract". What am I doing wrong?

Ron
Sometimes Windows built in folder/zip feature does not work with zip files created by other applications. Try downloading and installing the winzip program from www.winzip.com (http://www.winzip.com).

Meanwhile, if you don't want to download winzip, you can copy and paste this text into a file called:
\My Documents\EFILive\V7\Maps\E38_VEplot.map. Then in the Scan Tool, load the map file E38_VEplot.map into one of the 10 maps on the [Maps F11] tab page.

Make sure you have the CALC.E38_VE, SAE.RPM and SAE.MAP PIDs selected or the map will not function.
Note: The CALC.E38_VE PID is available in the latest release available here:
http://forum.efilive.com/showthread.php?t=5425


[FILE]
Version=7.4.2
DecSep=.

[Map]
Title.Caption=Volumetric Efficiency (Corrected)
Title.Parm=CALC.E38_VE
Title.Units=factor
Title.UnitsSys=None
Title.UnitsCode=factor
Title.Options=StrikeOut,ShowDisplay
ColCount=17
RowCount=17
Precision=5
MinCellWidth=32
MaxCellWidth=64
MinCellHeight=18
MaxCellHeight=18
ConstrainCell=0
XTitle.Caption=RPM
XTitle.Parm=SAE.RPM
XTitle.Units=RPM
XTitle.UnitsSys=None
XTitle.UnitsCode=rpm
XTitle.Options=StrikeOut
XLabels=,400,800,1200,1600,2000,2400,2800,3200,360 0,4000,4400,4800,5200,5600,6000,6400,6800
YTitle.Caption=MAP
YTitle.Parm=SAE.MAP
YTitle.Units=kPa
YTitle.UnitsSys=Metric
YTitle.UnitsCode=kPa
YTitle.Options=StrikeOut
YLabels=,15.0,20.5,26.3,31.8,37.5,43.1,48.8,54.4,6 0.0,65.5,71.3,76.9,82.5,88.1,93.8,99.4,105.0
Font.Color=-16777208
Colored=1
Color=-16777211
ColorNull=16777215
ColorLo=65280
ColorMed=65535
ColorHi=255
ColorCell=-16777211
EmptyCell=0
EmptyCellHide=0
EmptySmooth=100
Regards
Paul

[RonC]

Thanks Paul, I knew someone here would have the answer.

Ron

[oztracktuning]

I just installed winzip and its saying the file is an invalid archive

[GMPX]

I don't know if it the forum messing it up or what, but I don't use Winzip, XP zip or cotton candy zip, I use WinRar.

Cheers,
Ross

[Black02SS]

Yup all I use is WinRar as well. No problems here.

[limited cv8r]

Do the aussie L76 6.0l have a VE table? Or do we not have access to it yet? I can't find it.

[GMPX]

No VE table, just lots (and lots) of 2D tables that all together make up a normal VE number (which is what the above PID will log). We are working on something in this area, that is why we are not showing the 2D tables in this release.

Cheers,
Ross

[limited cv8r]

so how do we integrate this new E38 VE map into our tuning if we can't see a VE table

[Delco]

so how do we integrate this new E38 VE map into our tuning if we can't see a VE table

You dont , but it allows you to see what effect the changes you are making are doing.

[limited cv8r]

so at the moment are we back to playing with MAF,IFR & PE tables to control our fueling until we get access to the relevent 2D tables?

[Delco]

so at the moment are we back to playing with MAF,IFR & PE tables to control our fueling until we get access to the relevent 2D tables?


YES

The tables are nothing like a traditional table , all coefficients multiplied and added together depending on what zone the engine is running in to get the final result.

Going to take some elaborate thinking outside the square to tune these suckers properly mafless.

I have my car running mafless at present but there are lots of issues to resolve.

[limited cv8r]

Do the 6.0l VE commodores have the same .Tun as the L76 6.0l ?