Sounds right to me. I am pretty sure the post nox converter sensor is a california emissions requirement in 02 because a friend with a 02 S2000 has one post cat while the 01's don't. When Willie and I met we were doing some comparison. His 01 had just the 8 wire primary and 4 wire secondary. Mine 4 wire primary, 4 wire secondary and 4 wire post nox.
Something tells me removing the nox converter on mine would make the car freak out.
Something tells me removing the nox converter on mine would make the car freak out.