MAF Tuning

[dholloway543]

I have made a simple windows program to help me get average fuel trims so i can edit the MAF map.


This program requires you have an OFT .csv or ECUTEK .csv data log with the parameters


STFT
LTFT
MAF Volt.


It adds the STFT + LTFT together averaging the whole .csv at specific MAF Volt.


It also shows how many samples it took so you can determine if the sample size is big enough for you to trust the outputted value.


It looks bad because i didnt care if it looked nice. Only if it works.
I thought id share it including source incase anyone else wanted to use it


Feel free to share with other people, im leaving this as open source.


https://drive.google.com/file/d/13Yw...ew?usp=sharing

[dholloway543]

This is a sample of the output data

[QTR FMS]

thia is using ecutek log file .csv

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.FormatException: Input string was not in a correct format.
at System.Number.ParseSingle(String value, NumberStyles options, NumberFormatInfo numfmt)
at System.Convert.ToSingle(String value)
at CSV_STFT.Form1.openFilePopup_FileOk(Object sender, CancelEventArgs e)
at System.Windows.Forms.FileDialog.OnFileOk(CancelEve ntArgs e)
at System.Windows.Forms.FileDialog.HandleVistaFileOk( IFileDialog dialog)


************** Loaded Assemblies **************
mscorlib
Assembly Version: 4.0.0.0
Win32 Version: 4.8.4121.0 built by: NET48REL1LAST_C
CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/mscorlib.dll
----------------------------------------
CSV-STFT
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/Users/qtr-f/Downloads/CSV-STFT/CSV-STFT/CSV-STFT.exe
----------------------------------------
System.Windows.Forms
Assembly Version: 4.0.0.0
Win32 Version: 4.8.4121.0 built by: NET48REL1LAST_C
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System
Assembly Version: 4.0.0.0
Win32 Version: 4.8.4001.0 built by: NET48REL1LAST_C
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Drawing
Assembly Version: 4.0.0.0
Win32 Version: 4.8.3752.0 built by: NET48REL1
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System.Configuration
Assembly Version: 4.0.0.0
Win32 Version: 4.8.3752.0 built by: NET48REL1
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Core
Assembly Version: 4.0.0.0
Win32 Version: 4.8.4121.0 built by: NET48REL1LAST_C
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll
----------------------------------------
System.Xml
Assembly Version: 4.0.0.0
Win32 Version: 4.8.3752.0 built by: NET48REL1
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------

************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.

For example:

<configuration>
<system.windows.forms jitDebugging="true" />
</configuration>

When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.

[Kodename47]

I'll leave this here:
VGI's MAF (and everything else) tool

[dholloway543]

If you send me the ECUtek data log i can update it the application to suit your needs as well

[dholloway543]

Originally Posted by Kodename47

I'll leave this here:
VGI's MAF (and everything else) tool

http://www.romraider.com/forum/viewt...p?f=32&t=10481


The link he posted was broken, this one is corrected.


If you want though i can still get mine working for ecuteck datalogs

[dholloway543]

The software has been updated to include OFT logs and ECUTEK logs.


Same download link

[Kodename47]

Originally Posted by dholloway543

http://www.romraider.com/forum/viewt...p?f=32&t=10481

The link he posted was broken, this one is corrected.

If you want though i can still get mine working for ecuteck datalogs

Thanks, fixed it. The good thing about VGI's one is that it removes throttle changes, just averaging cells can get you into issues on areas that are typically for tip in. Also yours will only do closed loop sections of the MAF.

[dholloway543]

No Thats understandable, and definitely something that people should know. Im just trying to be a good person. It got my fuel trims within 2% for closed loop so I though id share it for other people to use. There are other solutions available but if people who know how to code they can use it for their own needs as well as its open for people to change for how they need. Ive changed the values from maf to coolant temp sensor to help get a ball park of my cold start

[brosifSmith]

I think stuff like this is helpful. thank you for posting it! I had to create a whole excel macro in VB to be able to reliably re-scale the MAF sensor after I boosted my car.