It seems like your device is using different scaling. At 0.15V, it's 9.7 AFR At 3.27V, it's 21.0 AFR are you sure about these values? I'm asking beceause it will give scaling: a = 3.62 b = 9.16 However, recommended scaling from innovate LC2 manual is a = 3.01 and b = 7.35. e.g 2.7 volts for recommen...