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Author Topic: Logging MAF sensor voltage  (Read 4844 times)
vtraudt
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« on: December 12, 2015, 05:34:15 AM »

Could not find the MAF VOLTAGE value in the logging parameters of Me7.
Not available as a loggable parameter?
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2002 Allroad 2.7T 6spd stage 2
1998 A4 1.8T 5spd stage 3
1996 A4 2.8 auto stock
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« Reply #1 on: December 12, 2015, 06:17:23 AM »

Sure it is

uhfm_w
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vtraudt
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« Reply #2 on: December 12, 2015, 07:06:12 AM »

Thanks much. Had used search term Massenstrom, but is listed as {HFM-Spannung}.
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2002 Allroad 2.7T 6spd stage 2
1998 A4 1.8T 5spd stage 3
1996 A4 2.8 auto stock
dream3R
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« Reply #3 on: December 14, 2015, 08:15:45 AM »

Sure it is

uhfm_w

Correct scaling is * 0.0048828125
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How to work out values from an A2L Smiley

http://nefariousmotorsports.com/forum/index.php?topic=5525.msg52371#msg52371


Starting Rev's http://nefariousmotorsports.com/forum/index.php?topic=5397.msg51169#msg51169

noobs read this before asking http://nefariousmotorsports.com/forum/index.php?topic=9014.0title=


ORGORIGINAL 05 5120 creator for Volvo
ORIGINAL Datalogger (Freeware) Author
ORGINAL finder of the 'extra' torque' limits
I don't have ME7.01 A2L I just use ID
vtraudt
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« Reply #4 on: December 14, 2015, 08:33:50 AM »

So by logging MAF values in g/sec and volt, I can verify if the MAF is properly scaled?
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2002 Allroad 2.7T 6spd stage 2
1998 A4 1.8T 5spd stage 3
1996 A4 2.8 auto stock
dream3R
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« Reply #5 on: December 14, 2015, 08:44:25 AM »

So by logging MAF values in g/sec and volt, I can verify if the MAF is properly scaled?

No, you'll see the Volt vs map curve post any other corrections, scaling is another story.  I use the Voltage to check for a bad maf normally

e.g  You could say at 4.5v 200 g/s in the map when the flow bench say's 185 g/s, this would not show up in the logs, but should show in your fuelling
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How to work out values from an A2L Smiley

http://nefariousmotorsports.com/forum/index.php?topic=5525.msg52371#msg52371


Starting Rev's http://nefariousmotorsports.com/forum/index.php?topic=5397.msg51169#msg51169

noobs read this before asking http://nefariousmotorsports.com/forum/index.php?topic=9014.0title=


ORGORIGINAL 05 5120 creator for Volvo
ORIGINAL Datalogger (Freeware) Author
ORGINAL finder of the 'extra' torque' limits
I don't have ME7.01 A2L I just use ID
dream3R
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Karma: +18/-8
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Posts: 1194


« Reply #6 on: December 14, 2015, 08:59:18 AM »

http://s4wiki.com/wiki/Mass_air_flow#Logging.2Ftuning.2Ftrouble_shooting

Needs an update but in General his explains it.
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How to work out values from an A2L Smiley

http://nefariousmotorsports.com/forum/index.php?topic=5525.msg52371#msg52371


Starting Rev's http://nefariousmotorsports.com/forum/index.php?topic=5397.msg51169#msg51169

noobs read this before asking http://nefariousmotorsports.com/forum/index.php?topic=9014.0title=


ORGORIGINAL 05 5120 creator for Volvo
ORIGINAL Datalogger (Freeware) Author
ORGINAL finder of the 'extra' torque' limits
I don't have ME7.01 A2L I just use ID
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