Hello all, I drive a Clio RSi 1.8l 8V year 96 ́ and rushed through the AU. Now I have recorded with my measuring device all values again, after I have renewed air filter and lambda probe. Here my measured values: Lambda 2.5 Co2 4.7 % O2 12.6% CO 1750 ppm = 0.175 % COunv. = 4400ppm The cat is soon over there clapping, I got a bit shaken out during the removal. To you professionals out there: I don’t know any further and would like to tip It’s very nice. KAT is ordered a new one but is the ONLY because ?? What else can it be ? What can I do ? I am grateful for any answer ! Greetings