Torque converter slip

EricM

Administrator
Staff member
I deleted the other 2. There is not currently a direct way to do that. I am working on adding a parameter that can display that.
 

TurboBob

Well-Known Member
yes, but the settings are dependent on the vehicle speed sensor settings in your tune.

what we do is create a math channel in that compares RPM to MPH with all the gear and tire settings factored in.
 

TurboBob

Well-Known Member
I did it in Megalogviewer, so the data is only viewable when reviewing logs. Its only correct in 3rd gear. To make it work in the other gears is more complicated. The 4120 is the number that changes for different tires and gears.

1709047807690.png
 

TurboBob

Well-Known Member
this is the spreadsheet I used to figure out that 4120 number.
 

Attachments

  • converter-slip-factors.zip
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TurboBob

Well-Known Member
the same math could be used to create a custom output channel in TunerStudio, Then the calculated data can be watched live.
 

EricM

Administrator
Staff member
Here is how to add a custom channel (parameter for datalogging) in TunerStudio Ultra (which comes with your ECU). You can follow with the pictures.
Open your project.

1. go to the custom channel editor
2. click on output channel
3. click on the new item icon
4. in the screen that appears, type in a name for your channel
5. then click on the advanced option.

slipchannel1.png


Here is where you enter the formula for the channel, in this case, converter slip.
Enter the info in the red box, press OK at the bottom, then press the save button.

slipchannel2.png


Next will be adding this channel as a datalogging field.
 
Last edited:

EricM

Administrator
Staff member
To add this channel to the datalog fields:

1. click on data log field
2. press the new item button
3. fill out the info in the red box like shown, and press OK
4. press the save button

You can close this screen.

slipchannellog.png




The next time you open laptop datalogging. You should see that new field in the list of things to put on your graph.

log1.png


Let us know how it goes.
 

TurboBob

Well-Known Member
was just looking in my spreadsheet, and my notes. for a stock setup use 4520 for the factor. If you make any changes to the VSS calibrations (say to match GPS speed or something), or gear/tire then you may need to adjust this.
 
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