ZR-1 Net Registry Forums - View Single Post

Franke · 05-10-2013

Thnx you for the welcome. The HC is 1.2913 and the limit is 2.000. Thats approx 1/2 the limit. CO was 15.1407 and the limit is 20.0000. So i'm good on that too. Some history on this car is that i've owned it for 5 years and the nox has been slowly creeping up. In 2007 with 53389 miles on it the nox was 1.282 and the state standard was 6.0000. In 2009 with 55294 miles on it the nox was 2.6949 and the standard was 3.5000. CO State changed the standard sometime between those two years. In May of 2011 with 55933 mi on it nox was 3.2886 and the standard was 3.5000. today it failed with 3.9183 nox.

05-10-2013	#10
Franke Join Date: May 2013 Location: Beaver, PA Posts: 515	Re: 1990 LT5 emissions fail Thnx you for the welcome. The HC is 1.2913 and the limit is 2.000. Thats approx 1/2 the limit. CO was 15.1407 and the limit is 20.0000. So i'm good on that too. Some history on this car is that i've owned it for 5 years and the nox has been slowly creeping up. In 2007 with 53389 miles on it the nox was 1.282 and the state standard was 6.0000. In 2009 with 55294 miles on it the nox was 2.6949 and the standard was 3.5000. CO State changed the standard sometime between those two years. In May of 2011 with 55933 mi on it nox was 3.2886 and the standard was 3.5000. today it failed with 3.9183 nox.