My aem wideband is freaking me out. Previously my car was running about 11.0 AFR at the top of 3rd gear. Which is slightly rich, my battery died a while ago not sure if that messes up anything with the settings or calibration or if the aem x series can even really be off calibration? Currently I am showing high 13’s so magically the car is running much leaner with no changes made.

I am hoping that it’s something with the gauge but I replaced the sensor with a new one and that didn’t change anything. I already have ruled out the possibility of bad or low octane gas. The car runs and drives just as it always has. Wouldn’t it pull timing or feel off if it was really running that lean?

I let off as soon as I see this just in case it’s actually correct. I am super paranoid right now.. the car idles at right about 14.6-15 AFR does that sound right?. Also I notice that while normal driving the gauge will never even go below 12 afr which I thought previously it would go much richer during normal driving conditions but I could be wrong. 600 hp, meth, supercharger 6 psi.