Originally Posted by
yugo42
Thanks for the visuals! Does your AFV/EGO value of 115 at cruise concern you? That seems like it must need to add a lot of fuel consistently.
I finally logged a couple more rides - one with corrections turned off, and one with them on so I could see how the system was correcting. The riding felt a little smoother running open loop, but the data consistently showed idle being lean and cruising being rich. Since I'm just using a narrowband, it was hard to tell how much. Turning everything back to default EGO/AFV settings showed that most often the EGO correction was taking away fuel at cruising (89-95) and adding fuel at idle (105 or so). There were areas in the data with exceptions though. I didn't have enough rides in to establish AFV but previous times I checked it with ECMDroid it always hovered around 105. The first ride was at about 70 degrees F, the second about 77.
I'm guessing this means my base fuel map needs work, but I also wonder if it is worth replacing the o2 sensor just to eliminate a possible issue there. It seems to be behaving normally, bouncing rich to lean with corrections in place and outputting expected voltages.