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Anyone got any smog check advice or tricks up their sleeve for passing? I tried to get my Mk2 past the beloved CA smog check and failed. I failed on the NOx measurements. Normally I'd suspect the EGR valve but its brand new along with the engine. The measurements were (actual/max)
----------------------------HC ------- CO ------ NOx
15 mph @1581 RPM 26/105 .02/.81 1333/1115
25 mph @2479 RPM 14/80 .01/.61 1357/945
Right now the engine is rebuilt 6M w<2000 mi, Thorley headers, 210 injectors, increased compression, all the factory intake and such installed. My only real questionable item is the factory cat. I may have cooked it last time on the dyno when I ran it pig rich (actually screwed the 02 sensor up). I'm hoping the new cat I ordered shows up this week so I can try it. I've only got to this weekend to pass it or the car will get non-opted for next year. I think all the #s are a little high so I hope the cat will drop them. I think the HC #s should be around 5ppm and COs should be 0. The raised compression should hurt the NOx reading but I still should be able to pass. Everything else on the motor runs perfectly. Anyone have any luck with that emissions pass in a can stuff? I'm getting desperate......
On the plus side I believe this is the 1st year in awhile that the passing #s haven't dropped. I remember when the passing HC#s were like 300 and 400. On the even more piss you off stuff the passing #s for a Mk2 are lower than my dads '95 1.8L 4cyl Escort commuter wagon, go figure.
----------------------------HC ------- CO ------ NOx
15 mph @1581 RPM 26/105 .02/.81 1333/1115
25 mph @2479 RPM 14/80 .01/.61 1357/945
Right now the engine is rebuilt 6M w<2000 mi, Thorley headers, 210 injectors, increased compression, all the factory intake and such installed. My only real questionable item is the factory cat. I may have cooked it last time on the dyno when I ran it pig rich (actually screwed the 02 sensor up). I'm hoping the new cat I ordered shows up this week so I can try it. I've only got to this weekend to pass it or the car will get non-opted for next year. I think all the #s are a little high so I hope the cat will drop them. I think the HC #s should be around 5ppm and COs should be 0. The raised compression should hurt the NOx reading but I still should be able to pass. Everything else on the motor runs perfectly. Anyone have any luck with that emissions pass in a can stuff? I'm getting desperate......
On the plus side I believe this is the 1st year in awhile that the passing #s haven't dropped. I remember when the passing HC#s were like 300 and 400. On the even more piss you off stuff the passing #s for a Mk2 are lower than my dads '95 1.8L 4cyl Escort commuter wagon, go figure.