Hey y'all, I have a 1983 FJ60 with 234,000 miles that I bought back in August and I've run into a few problems that I am unsure about. For a little bit of context I'm 16 and bought my LC as a way to work my way into the automotive world. So far I have soaked, acid etched, and resealed the fuel tank and custom fabricated a steel side exit exhaust with a Tundra flowmaster cat and no muffler. After doing these fixes I have been able to drive my FJ60 260 miles a week for a few months but now it has come time to do emissions, which it has already failed twice. Both times it failed the CO2 was 95 and 97 (Colorado limit is 60). Does anyone have thoughts on what I should do to fix this? My first thought was that it is running rich, but I really have no clue. Thank you to anyone who can try to help.