[blackrms13]

I know this is a old thread but I just failed my smog

91 S13(about 115k) with a stock 95 OBD-I KA(68k), I believe it is a non-cali engine

New Plugs/Wires (about year ago)
New O2 Sensor (2-3 weeks ago, but the tech said "something is wrong with it b/c its running very rich)
2.5inch catback

NO reading is like 7xx max right?
I got like 3000+ reading...

i warmed up my car pretty well before doing the smog(drove from riverside to LA, about 1 hour)

I know the timing is off for sure(well after the test....) need to find a timing light first
gas cap failed(bought a new one right afterwards)

from reading this thread, i assume its time for a new cat?

thanks to whoever can help