ZR-1 Net Registry Forums - View Single Post - Another ZR-1 Approved by the CA Smog-Nazi's!

mike100 · 12-13-2011

On closer inspection... in 2005 the tech tested the 15 mph segment in first gear at 1800 rpm on my car- the NOx was low due to low engine load..ha! I wonder if that is allowed? The 25 mph test result was the same 6 years ago as it was this year. I guess the cats are in the same health as they were years ago.

It seems Nox conversion is just a function of how uncontaminated the catalysts are...that and combustion temps/pressure. It will fail eventually I think.

12-13-2011	#3
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,786	Re: Another ZR-1 Approved by the CA Smog-Nazi's! On closer inspection... in 2005 the tech tested the 15 mph segment in first gear at 1800 rpm on my car- the NOx was low due to low engine load..ha! I wonder if that is allowed? The 25 mph test result was the same 6 years ago as it was this year. I guess the cats are in the same health as they were years ago. It seems Nox conversion is just a function of how uncontaminated the catalysts are...that and combustion temps/pressure. It will fail eventually I think.