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AFR reading while datalogging
Posted: Mon Jun 21, 2010 6:52 pm
by egslim
quick question. when i datalog my Air/Fuel line on the graph remains flat. what must i do to get it to fluctuate like all other graphs when i datalog?
Posted: Tue Jun 22, 2010 12:42 am
by Luke
i shall be flat, with a small rise when going into full load.
to see how the AFR "really" is, you need to log a wideband signal.
when going of the accelerator, there should be a peak to lean, but that's ok :)
regards Luke
Posted: Tue Jun 22, 2010 12:11 pm
by egslim
right that is what i am doing, I have my wideband wired into my ELD D10 in my S300J .
how ever if i data log the wideband reads a flat line straight across, no matter if i am cruising, WOT, or off throttle.
As i scrub through the log the AFR readings change ( the numbers ) but the line is flat.
It doesnt bother me that it is flat , cuz i get the readings i want, just wanted to know how come my graph line doesnt fluctuate as the numbers change
Posted: Tue Jun 22, 2010 12:45 pm
by Spunkster
Posted: Tue Jun 22, 2010 12:55 pm
by egslim
the car is a EG civic with a built B20VTEC motor, running the JDM P72 ECU with the S300J.
a test datalog is attached
Posted: Tue Jun 22, 2010 1:39 pm
by Spunkster
post your calibration and what wideband you are using.
Posted: Tue Jun 22, 2010 10:21 pm
by egslim
here is the calibrattion
Posted: Wed Jun 23, 2010 10:24 am
by Spunkster
It reads fine here. CHeck your settings for the AF in the sensor list to make sure it is set to display a range that makes sense, such as 10-20
Posted: Wed Jun 23, 2010 12:10 pm
by egslim
oh yeh it works. Thanks
lol
mine was 0.7 and 1.4