Are you looking for any way to calculate air – fuel ratio Lamda parameter? Lambda Graph Calculator Pro is a free calculator tool for such calculation in quick and easy manner.
Input the exhaust gas measurement values of CO, CO2, O2, and HC in the program to get final lamda value. If the exhaust gas test equipment displays a lambda value and you are not using it, you are missing out on a potent tool that diagnoses engine air/fuel ratio imbalances immediately.