MAF Sensor Calibration helper app.

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Dec 28, 2011, 02:03 PM

azevox

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MAF Sensor Calibration helper app.

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 Evoscan and AP logs are supported. If other logs don't work, post here so I can add the support for it.

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

Last edited by azevox; Jan 11, 2012 at 02:40 PM. Reason: more log support

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Mar 15, 2012, 10:42 AM

fostytou

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Thanks!

I assume this doesn't eliminate rows where APP (accelerator pedal position) is <13 (aka 0). That might make the program slightly more accurate.

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Apr 4, 2012, 06:01 AM

jyamona

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Quote:

Originally Posted by fostytou

Thanks!

I assume this doesn't eliminate rows where APP (accelerator pedal position) is <13 (aka 0). That might make the program slightly more accurate.

+1 to this, right?

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Apr 12, 2012, 11:04 AM

fostytou

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Just an FYI if you are using standalone logging these are the 3 items you need to log ('08 USDM)

Quote:

paramname=MAF_Volts
paramid=0x808F50
databits=16
scalingrpn=x,1024,/,5,*

paramname=LTFT_Current
paramid=0x808C1F
scalingrpn=x,0.1953125,*,25,-
sampgroup=50

paramname=STFT
paramid=0x808898
scalingrpn=x,0.1953125,*,25,-
sampgroup=1

I'm going to try this and eliminate where (TPS < 13% and RPM > 1500). This should keep idle then, although I think STFT might go to 0 when in decel... I just gotta look at the log later and see. I'll also eliminate the cold coolant temps (as instructed).

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