Well my girl friends bone stock 94 honda civic automatic just failed emissions and i need it to pass asap! but some where in its life some dick put a aftermarket cat on it and i think this is the problem! i am thinking about putting my buddys cx manafold on the car the one that has the cat on the manafold to try to solve this but here are the numbers!
25/25 reading allowed
hc ppm 246 147
co% 4.53 0.82
nox ppm1475 1072
rpm 1889 3000
co+co2 16.7 6.0
50/15
reading allowed
213 152
4.02 0.85
1195 1186
2049 3000
16.6 6.0