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Originally Posted by Richbot
Nice, thanks! No a/f plot on the two bolt-on M3's?
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As you can see, the AFR plots on many of these cars are pretty jacked up. The wideband sensor on the dyno seems to be going bad. For all of the M3's PencilGeek collected AFR directly from the ECU itself. If you click on each of the M3's DynoDB entries, you will see the AFR plots from data taken directly from the ECU.
PG put up one graph to show how jacked up the dyno sensor was. Look at the following entry, it shows the dyno AFR along with the ECU AFR.
http://bmw.pencilgeek.org/showDyno.php?recID=419