Hello, i have buy the UTCOMP PRO. I need to know what a and b by the air fuel Ratio Mean I have a Lambda gauge from England Who Shows 0-5V 7.35-22.39 AFR But i want to show it in Lambda ( :14.7 ) i have actualy a=0.21 b=0.5 it is verry close but not exakt. I have on the digi out unser a Verry Bright...