You called it, it failed, but the HC and CO were very close, it was the NOx that was way off. Im gonna pull the exhaust off my 87 with the cat just bolt it on to go through again.ProfZ said:The 900's fuel injection system produces very clean burning; if all that was tested were HC (hydrocarbons) and CO (carbon monoxide), I would give a de-catted 900 a good chance of passing.
However, Connecticut also tests for nitrous oxides (NOx), and there's no way to pass this test without a cat.
My suggestion is to install a cat (even if it's an inexpensive one from a junkyard), and then go through the test. That's all I can say without it being construed that I'm giving advice on circumventing the law.
quick4door said:Well I thought I might post up the results, this is with no cat.
HC-limit 250 - result 265
CO-limit 0.80 - result 0.84
NOx-limit 1750 - result 2340Thanks for all the tips guys, I did what you all said, AMM adjustment, added the cat, that was a big one, and adjusted timing, it passed very well, everything went down, NOx went down to 82. Thanks again