Catalytic Converters for CA '91 ZR-1

[dmaclennan]

Originally Posted by Z51JEFF

The State has some help when it comes to failed smog tests and defective cats that are no longer available. I've seen where one owner got a deferral from the State where he no longer had to test the car. And something to keep in mind installing used cats on a car is illegal,that right there helps owners as far as proving the cars are no longer available. The State can't legally out law a car that was built to Federal emissions standards at the time of manufacture. The State of California has lowered the max Nox levers over the years. When I bought my car back in 2007 the max Nox level was 702,the State has lowered the max Nox level to 502.

I'll keep this in mind for the next smog check. Thanks