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Old 08-08-2012, 07:37 AM   #11
Beastly Adventurer
Joined: Nov 2006
Location: NE Oregon
Oddometer: 5,507
Sooo..What Does It "Show"?

Originally Posted by roger 04 rt View Post
AFR is relatively easy to measure with a wideband O2.

Here is a plot of AFR with and without an IAT shifting device set at 20C. It can be measured in Open Loop. The top plot is without the IAT shift and the bottom is with 20C shift. The red dotted line is at 14.7 the blue dotted line at 13.8. Trying to measure it after the bike has run Closed Loop is harder.

I am clueless but it seems to show with a -20 IAT shift the AFR is more consistent in the 15-14:1 AFR [?]
"In Wallowas"
2007 R1200GS Adventure " explore off-road, alone in my case, way out in the boonies...that feeds the soul!" After 2014 BOM my bike is forthwith the "GS McGee"!
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