Here is a link to an article with pictures on how to set the timing on a 1990 CRX.
http://crxcommunity.com/viewtopic.php?t=16915 Your 92 is the next generation of motor, but the process should still be pretty close to the same. Unfortunately a couple of the pictures are missing.
From very high NOx, plus somewhat high HC, I would think you're running quite lean--lean enough either for some misfires, or for the burn not to be complete. A new O2 sensor probably couldn't hurt the readings, and might help. Not sure if the 92 has EGR or not; if it does then your EGR system could have problems.
-soD