Virtual Dyno Help

[Supra_Cop]

I'm not super savvy when it comes to this stuff, and I was wondering if maybe someone out there could provide me with some assistance. I stumbled upon virtual dyno the other day and thought I could take the last log I did for Botti when I was getting street tuned. Well I plugged it into the system and got a pretty crazy looking graph. I'll attach a picture of what I ended up with and the log in the event that I'm doing something wrong, which I'm sure I am. Any assistance is greatly appreciated. I get asked all the time what my car is dyno'ing and I have a ballbark guess but it would be nice to actually have something to show.

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[Kolme]

Looks good to me!

 

[XtremeMaC]

Not familiar with this. It could be millions of things, starting with, what do you mean by you "plugged in" the last tune from Botti?
What file format. Did it process it with no issues. Did you have to select a channel or something..
I feel like maybe you directed it to graph wrong parameters..

 

[Supra_Cop]

Not familiar with this. It could be millions of things, starting with, what do you mean by you "plugged in" the last tune from Botti?
What file format. Did it process it with no issues. Did you have to select a channel or something..
I feel like maybe you directed it to graph wrong parameters..

Plugged in = Loaded.
From what I know of it you just load in your log and it was suppose to do some magic and spit me out a dyno. I’m 100% sure that it’s not graphing the right parameters given the graph.

 

[Kolme]

I’ve never done a virtual dyno. But from what I know, you basically find a super flat spot, run the car WOT (from a dig or roll) and it generates a graph. You do it both directions to get an average and you want to avoid anything that would invalidate (like how draggy works). That’s atleast what I’ve heard before. @zrk knows more stuff about stuff so I’ll let him stuff you full of his knowledge stuff.

 

[B58_ hwAyaq]

but it would be nice to actually have something to show.

Show them this graph, then tell them to worry about times instead of dyno numbers.

(kidding, but mostly not kidding)

 

[XtremeMaC]

Based on internet you've to setup the vehicle parameters like FDR, gear ratios, tire size, etc. Did you do all that.
Link to software. Is it the Android App?

Android App says not just any random log..

 

[Axix23]

Make sure your in the right gear. Play around with the gear selection. You can almost smooth out the graph alittle as well. There are ton of settings on the virtual. Make sure weight is right and tire size. You will need to play around with it until your numbers seems more reasonable. I ran the same virtual dyno for years and gotten decently accurate results.

Try 4th gear reading and also smooth it down To 5 or 6 and see what happens.

 

[Supra_Cop]

Based on internet you've to setup the vehicle parameters like FDR, gear ratios, tire size, etc. Did you do all that.
Link to software. Is it the Android App?

Android App says not just any random log..

I’m running this virtual dyno: https://barnhill.bitbucket.io/

I went in and set the tire sizes and vehicle weights. I selected the 2020 Supra, and was assuming the gear ratio was set from pre-selecting the car. That may be where the issue lies. The log I loaded in was also a 3rd gear to 5th gear pull, so it may be too much data.

 

[XtremeMaC]

I’m running this virtual dyno: https://barnhill.bitbucket.io/

I went in and set the tire sizes and vehicle weights. I selected the 2020 Supra, and was assuming the gear ratio was set from pre-selecting the car. That may be where the issue lies. The log I loaded in was also a 3rd gear to 5th gear pull, so it may be too much data.

ah cool. something new to play with

From the Data Folder:

<CarMake>Toyota</CarMake>
<CarModel>Supra</CarModel>
<CarSubModel>3.0L GR MKV</CarSubModel>
<StartYear>2020</StartYear>
<EndYear>2020</EndYear>
<Weight>3397</Weight>
<TransTypeManual>false</TransTypeManual>
<TransGear3>2.172</TransGear3>
<TransGear4>1.72</TransGear4>
<TransGear5>1.316</TransGear5>
<TransGear6>1</TransGear6>
<FinalGearRatio>3.15</FinalGearRatio>
<DragCoefficient>0.33</DragCoefficient>
<FrontalArea>23.2</FrontalArea>
<TireDiameter>26</TireDiameter>
<Custom>true</Custom>

Which looks correct.

 

[Kashbringer]

You'll need to open the log in excel and delete all rows that are in other gears that you dont want to see. You'll want to do one gear at a time or you'll get a graph that goes back forth.

 

[Kashbringer]

Used to use virtual dyno a lot on my built / big turbo mazdaspeed 3. Once you get the settings down it's pretty darn accurate if you are on a straight and level road.. Though it did take some time to get it all configured compared to real world dyno pulls

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