nox

My new-to-me JDM hundo isn't clearing emissions. When I first tested at emissions, I got the following values: HC GPM 0.0903 (state limit is 0.8000) CO GPM 5.7097 (state limit is 15.0000) CO2 GPM 646.6110 NOx GPM 3.443 (state limit is 1.5000) This is what failed me. The vehicle was running a...