[Swiftus]

Hi,

Just want to share with the community an app I wrote to help with MAF cal.
The app will do all the tedious work for you and give you numbers to use.

http://www.tunerstools.com/mafcal.php

Hope this help out...

If there's any problems, please post here.
Currently AccessPort,EvoScan, and ATR logs are supported.
If other logs don't work, post here so I can add the support for it.
Please try to log the minimum needed as the server has maximum file size limit.
Log only maf voltage, ltft current, and stft if you can.

If you have suggestions for improvement of this one or would like to see new apps, let me know.


header set supported:
AccessPort ---> MAF Voltage (V),LTFT Used (%),STFT (%)
Evoscan ---> MAF,CruiseLTFT,STFT
Tactrix ---> MAF_Volts,LTFT_Current,STFT
ATR ---> MAF (V),LTFT,STFT
ATR ---> MAF Voltage,LTFT Used,STFT

For the most accurate result, LTFT current should be use.

 

[Swiftus]

What is this php nonsense! Bossmode! Bookmarked (for next time I need to calibrate a maf!)

I was just getting tired of spreadsheeting my maf cal. This was my solution for myself that I decide to share with this great community.

I'll try to find an evoscan log so I can support it.

 

[Swiftus]

MAF Voltage (V)
LTFT Cruise (%)
STFT (%)


Cool! Thanks for the help.

Apps in the works:
Boost tuning
WOT pull analyser

 

[Swiftus]

Thanks Hollywood. Let me know if you see any problem with it.

 

[Swiftus]

I have attached a log I took today cruising around on the way home from work.

Thanks HM. I have updated the app. It now support AccessPort and Evoscan.

 

[Swiftus]

Is there a way to get an offline version?

It's written in php so you'd need to have a web server running on your computer. I use XAMPP running on windows to write the codes.
I can provide a copy for you. It's probably not the most efficient code but it works fine.

 

[Swiftus]

A bit hit and miss it seems;

Looks to be table header issue. Are these from AP or Evoscan?

The last log doesn't seem to have MAF voltage column.

 

[Swiftus]

Lol I have no idea what that means :bowlol:
I have multiple programs on my computer, can I run it in Dreamweaver CS5 or something?

Sorry no. It would need a web server to run it offline on your computer.

 

[Swiftus]

They are from ATR which is the complex logging software that comes with the AP.

Made some changes. The first 2 logs works. The Vegas one does not since it does not have MAF Voltage field at all.

Please check it out and let me know if it matches perfectly with manually calculated one.

 

[Swiftus]

Attached is a new updated Cobb ATR log, can you make it work with it? I keep getting errors trying to load it.

Thanks for the log. I updated the script and it is now working with this log.

 

[Swiftus]

I can't get this to work. Is there some sort of nomenclature/whatever missing?
I tried the original heading's that come standard with EvoScan, no dice. So then I tried renaming to the exact column titles listed....still nada. Tried 2 different browsers....didn't make a difference. Tried smaller files (half the size), and still nothing.:wtfsign:
"X" is the relabeled headings

I'll see what I can do. Most likely the header is different. Different software and different version of the software log with different headers so I have to add support for them. You should always use LTFT current for the most accurate result.

You have alot of columns logged. I tried deleting columns not needed and using only maf,ltft and stft and it worked.

Header set supported:
AccessPort ---> MAF Voltage (V),LTFT Used (%),STFT (%)
Evoscan ---> MAF,CruiseLTFT,STFT
Evoscan ---> MAF Voltage,CruiseLTFT,STFT
Evoscan ---> MAF Voltage,CurrentLTFT,STFT
Tactrix ---> MAF_Volts,LTFT_Current,STFT
ATR ---> MAF (V),LTFT,STFT
ATR ---> MAF Voltage,LTFT Used,STFT

 

[Swiftus]

Added more info to the app. There's alot of different headers definitions out there so I'll have to limit it and users will just have to make changes to csv before uploading. Thanks for helping fine tune the app.

 

[Swiftus]

OK I went out and logged just the 3 parameters.
Question: by staying out of boost (to accruately reflect the amount of air flowing w/o compression) I'm limiting my voltage range. This kinda caps the 'Multiplier Values' to a MAF Voltage to ~3 (a bit less for me). Rather than going and changing my boost tables, could I just drive normal to get to higher speeds (i.e. boosting onto the freeway) and simply do a 'Sort' to delete any lines w/ positive boost values? Will this have any sort of unwanted effect on the logic of your program?
For instance, I can cruise at 80 and stay out of boost (allowing me to log the higher MAF voltage ranges) but I'm going to boost quite a bit to get there

The program automatically delete open loop values so going into boost will not affect the calculation. Rapid changes in throttle input will so try to be smooth on the gas pedal helps with accuracy.

The program checks for open loop. If STFT and LTFT are 0, it is not used in the calculation. In open loop, STFT and LTFT used are 0.

The average of fuel trim error below 2.66 are used for 2.66-5v maff values.

To get to 2.66v you only need to cruise about 60-65mph in 5th.

 

[Swiftus]

Yes, very difficult for me to not get into boost also. It's just fun being in boost all the time.

 

[Swiftus]

I love you for making this.
But, It dont work for me! :computermad:
I tried every variation and even deleted all the shiz except "MAF Voltage,CurrentLTFT,STFT".

You don't need quotes (")
Remove them from the headers and it'll work.

 

[Swiftus]

Thanks for helping out hollywood...
:thumbup:

 

[Swiftus]

Not if problem with openoffice but the file is NOT csv and also the header contains " marks. That's what I see using excel

 

[Swiftus]

Must be the way openoffice saves the file.
File was TAB separated. Here's one that works.

 

[Swiftus]

This program is WAY too picky about the headers.

Even if I copy and paste the format of the headers from your spec on the page (Evoscan ---> MAF,CruiseLTFT,STFT), it still won't accept it. If I change the first to MAF Voltage, it works.

Why not just do a string search for the word "MAF". If that word is in the column, then you know it must be what you're looking for. Ditto for ltft and stft.

Also - suggestions:

Consider allowing the user to paste in his current MAF scale so the program can do the mulitplications for you. This way, we don't have to manually multiply each cell.

Also consider showing us how many (or what percentage of the log) contains each voltage step. This way we know how reliable the number is.

Thank you for the suggestions. I will see what I can do to make it easier to use.