Okay, since some of you have been asking for it, and I just failed

, let's go through what causes high HC, CO2, and NoX. I know I'm not terribly familiar with what to do if you have high readings.
So here goes, post up what you
know as far as HC, CO2, and NoX goes, and I'll put it all in an info thread which I can sticky.
let's make this happen.