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New Owner of 90 in Cali! - Failed Smog :(

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09-27-2018	#22
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,802	Re: New Owner of 90 in Cali! - Failed Smog :( new o2 sensors will help the nox. Also, it would be almost rare to find a zr-1 that hasn't been 'chipped' so the extra ign timing programmed into that might elevate nox as well. well worn catalysts benefit from not warming up the car and just running it cold on the dyno,

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