Take all the skepticism you have for a normal dyno, apply a few pinches of salt and you come to this: Virtual Dyno
Setup:
Download the installer from here: http://www.virtualdyno.net/public/VirtualDyno_Setup.exe
Install it like any normal application. (Next, checkbox, Next, Install)
Once it is done installing it will open. Just close it for now.
Open up a file explorer and paste this in the address bar:
Open up the file: "Audi_S4_08-13.xml" and replace the contents with the following:
If you are OCD like me rename it to: "Audi_S4_08-16.xml"
Adjusting the Settings:
Configuring your Profile:
Install it like any normal application. (Next, checkbox, Next, Install)
Once it is done installing it will open. Just close it for now.
Open up a file explorer and paste this in the address bar:
Code:
%AppData%\Virtual Dyno\Cars\Audi\S4
Code:
<?xml version="1.0" standalone="yes"?>
<CarDataset xmlns="http://tempuri.org/CarDataset.xsd">
<CarParameters>
<CarMake>Audi</CarMake>
<CarModel>S4</CarModel>
<CarSubModel>B8</CarSubModel>
<StartYear>2009</StartYear>
<EndYear>2012</EndYear>
<Weight>3850</Weight>
<TransTypeManual>false</TransTypeManual>
<TransGear3>1.560</TransGear3>
<TransGear4>1.180</TransGear4>
<FinalGearRatio>3.875</FinalGearRatio>
<DragCoefficient>0.28</DragCoefficient>
<FrontalArea>22.5</FrontalArea>
<TireDiameter>26.035</TireDiameter>
</CarParameters>
<CarParameters>
<CarMake>Audi</CarMake>
<CarModel>S4</CarModel>
<CarSubModel>B8</CarSubModel>
<StartYear>2009</StartYear>
<EndYear>2012</EndYear>
<Weight>3850</Weight>
<TransTypeManual>true</TransTypeManual>
<TransGear3>1.520</TransGear3>
<TransGear4>1.133</TransGear4>
<FinalGearRatio>3.680</FinalGearRatio>
<DragCoefficient>0.28</DragCoefficient>
<FrontalArea>22.5</FrontalArea>
<TireDiameter>26.035</TireDiameter>
</CarParameters>
<CarParameters>
<CarMake>Audi</CarMake>
<CarModel>S4</CarModel>
<CarSubModel>B8.5</CarSubModel>
<StartYear>2013</StartYear>
<EndYear>2016</EndYear>
<Weight>3850</Weight>
<TransTypeManual>false</TransTypeManual>
<TransGear3>1.406</TransGear3>
<TransGear4>1.025</TransGear4>
<FinalGearRatio>3.875</FinalGearRatio>
<DragCoefficient>0.28</DragCoefficient>
<FrontalArea>22.5</FrontalArea>
<TireDiameter>26.035</TireDiameter>
</CarParameters>
<CarParameters>
<CarMake>Audi</CarMake>
<CarModel>S4</CarModel>
<CarSubModel>B8.5</CarSubModel>
<StartYear>2013</StartYear>
<EndYear>2016</EndYear>
<Weight>3850</Weight>
<TransTypeManual>true</TransTypeManual>
<TransGear3>1.520</TransGear3>
<TransGear4>1.133</TransGear4>
<FinalGearRatio>3.680</FinalGearRatio>
<DragCoefficient>0.28</DragCoefficient>
<FrontalArea>22.5</FrontalArea>
<TireDiameter>26.035</TireDiameter>
</CarParameters>
</CarDataset>
Adjusting the Settings:
Open Virtual Dyno
Select File>Options from the top
Click on the Columns and Profiles tab and input the following data:
Select File>Options from the top
Click on the Columns and Profiles tab and input the following data:
Code:
STAMP Engine speed Lambda probes actual: bank1 Accelerator position Intake manifold pressure: absolute (OR a "Boost" field with the bar corrected to PSI)
Configuring your Profile:
Select Profiles>Add Profile from the top
Select your car from the drop down
Select the Gear
Adjust the Tire ht field by clicking on the little blue box next to it and inputing your tire information.
Adjust the Car Weight and Occ Weight if you know them.
Select your car from the drop down
Select the Gear
Adjust the Tire ht field by clicking on the little blue box next to it and inputing your tire information.
Adjust the Car Weight and Occ Weight if you know them.
Generate Logs with VCDS:
Refer to Jran's guide here on how to use VCDS: How To: VCDS Performance Logging
Only Stamp, Engine Speed and Accelerator position are required. Lambda and Intake pressure are optional.
Here are the fields I usually use:
You will want a log of a full 3rd or 4th gear pull. (Put the car in manual mode, get the RPMs as low as you can then gas it to red line) Mine are usually 3rd gear 2,000-7,200 RPM
Once you have a log prune out all the irrelavent information until you are left with a file like this:
Save it and you should be good to go.
Only Stamp, Engine Speed and Accelerator position are required. Lambda and Intake pressure are optional.
Here are the fields I usually use:
Code:
TIME Loc. IDE00021 Loc. IDE00086 Loc. ENG100261 Loc. ENG100449 Loc. ENG100030 Loc. ENG102932 Loc. ENG101741 Loc. ENG101388 Loc. ENG102763 Loc. ENG99738 STAMP Engine speed Accelerator position Engine torque IGA_AD_1_KNK[0] IGA_AD_1_KNK[5] Ignition angle: actual Intake air temperature Intake manifold pressure: absolute Lambda probes actual: bank1 RFP_AV
Once you have a log prune out all the irrelavent information until you are left with a file like this:
Save it and you should be good to go.
Using Virtual Dyno:
Launch the Program
Click File > Load Run from the top
Once the files are loaded Click Profile > Your Profile from the top
This should generate some pretty graphs for you
You can adjust smoothing in the top right, I generally have it at 2
You can also change the dyno type in the Options. I usually use "Virtual Dyno"
Click File > Load Run from the top
Once the files are loaded Click Profile > Your Profile from the top
This should generate some pretty graphs for you
You can adjust smoothing in the top right, I generally have it at 2
You can also change the dyno type in the Options. I usually use "Virtual Dyno"
In my experience this has been very close to what I saw on the actual Dyno.
Example graph:
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Originally Posted by skiptowncat
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