failed smog ca.

[butfkr]

have a 93 s13 with 168000 on the ticker and she fail the sniff test on smog. stock motor. just has lighted pulles drive shaft and vlsd


15 mph: CO2 = 13.96, O2 = 1.03, HC = 89 (MAX IS 88), CO = .18 (max is .52), NO = 1389 (max is 704)

25mph: CO2 = 13.75, O2 = .81, HC = 53(max is 63), CO = .08 (max is .50), NO = 1148 (max is 738)

i replaced the a airfilter, seafoemed the vac lines and oil, and did a oil change. i'm also going to run some smog cleaner in the gas.

i just want some feed back to see if that should do the trick or should i replace the pvc or some else