Hello! Have an Arosa 6HS with 1.4l AUD engine. This engine has 2 Lamda probes, once at the cracker before the first CAT, the second after the second CAT. In what way does the engine control work? I could imagine the engine control unit measuring the injection amount make the value of the first Lamda probe and with the 2nd test the effect of the CAT. In addition, the next question, where is the second Lamda probe plugged in? Greetings Sepp