[boostedf22c]

The LM-1 uses a Bosch LSU4.2 sensor.

The formula for converting voltage to AFR with that sensor (from my notes) is

AFR = 2.375 x output voltage + 7.3125

So if the output voltage is 2 volts that would be

2.375 x 2 + 7.3125 = 12.06 AFR (for example)