Just Failed CA Smog. Now what? - ZR-1 Net Registry Forums

glkuntz · 02-26-2015

I thought it might be informative to show what has changed over time in Ca for those of us who have to deal with it.

My car is a 1990 Ca delivered car that I have owned since 1995. It has always passed the smog test, albeit, marginally sometimes. It has always been entered as a California spec car and with just Corvette as the model.

Below are the results from 2008 and 2010. Sometime between these two tests the limits were reduced by about 1/3 as you can see from the max allowable columns.

2008

2010

Additionally for 2010 the test required that the 25 MPH test be done in second gear, causing the car to essentially lug along at very low RPM. This does not represent real world driving and, while I'm not an engineer, it would seem this could contribute to the poor readings. My car, as a 1990, has no EGR valve, so trying to obtain the required results is difficult at best.

In the near future I will go to a smog station and see if they can do the test using the "Federal" as the certification, along with "Corvette ZR1" as the model designation, and if so does it makes any difference. I really hope so as it would make life a lot easier.

Stay tuned.

Gary

02-26-2015	#11
glkuntz Join Date: Jan 2011 Location: Northern Calif Posts: 16	Re: Just Failed CA Smog. Now what? I thought it might be informative to show what has changed over time in Ca for those of us who have to deal with it. My car is a 1990 Ca delivered car that I have owned since 1995. It has always passed the smog test, albeit, marginally sometimes. It has always been entered as a California spec car and with just Corvette as the model. Below are the results from 2008 and 2010. Sometime between these two tests the limits were reduced by about 1/3 as you can see from the max allowable columns. 2008 2010 Additionally for 2010 the test required that the 25 MPH test be done in second gear, causing the car to essentially lug along at very low RPM. This does not represent real world driving and, while I'm not an engineer, it would seem this could contribute to the poor readings. My car, as a 1990, has no EGR valve, so trying to obtain the required results is difficult at best. In the near future I will go to a smog station and see if they can do the test using the "Federal" as the certification, along with "Corvette ZR1" as the model designation, and if so does it makes any difference. I really hope so as it would make life a lot easier. Stay tuned. Gary