Anyone live in NC?? Question on emissions
Well I'll be moving out of a free state into a state that requires annual emissions testing. I wanted to know specifically how turboing one of these cars works in NC. Does anyone own a turbo B series in NC?
My experience is with GA and TN, but I agree with @NVturbo - requirements are going to vary by county. From my past experience, anything OBD2 (96+ Civics / Integras) will require a scan of the ECU through the canbus. This means that cars which are OBD2 > OBD1 converted will not pass emissions, as the canbus will not communicate with OBD1 ECUs. I have a friend who had a turbo EK and every year he would remove his turbo kit, reinstall stock components, and convert back to OBD2 about a month before emissions testing, then convert it all back after passing. He said it was a huge pain in the ***. This is why I have only turbocharged OBD1 and older Hondas over the years.
For OBD1 and older vehicles, since there is no canbus, you have to pass a tailpipe sniffer test. In GA, the car had to go onto a dyno to measure wheel speed and the emissions were tested at two different speeds. In TN, they test my tailpipe emissions at idle, so no rollers. This past year I passed with my turbo Civic while running E85 - I did lean out the idle just a bit to get AFR's around 14.5:1 - 15.0:1. Both GA and TN have used a mirror to check for a catalytic converter and pressure tested the gas cap. Currently I have a high-flow cat that I swap in for emissions day, and run a test pipe the rest of the year.
Different areas have different laws on when a vehicle no longer has to be tested, also. In GA, any vehicle made before 1976 and any vehicle that was 25 years old or older were exempt from emissions testing. Where I'm at in TN, a car can never "age-out" of emissions testing - it's only exempt if it's pre 1976. Thankfully they are planning to eliminate testing in my county all together in the next couple of years.
For OBD1 and older vehicles, since there is no canbus, you have to pass a tailpipe sniffer test. In GA, the car had to go onto a dyno to measure wheel speed and the emissions were tested at two different speeds. In TN, they test my tailpipe emissions at idle, so no rollers. This past year I passed with my turbo Civic while running E85 - I did lean out the idle just a bit to get AFR's around 14.5:1 - 15.0:1. Both GA and TN have used a mirror to check for a catalytic converter and pressure tested the gas cap. Currently I have a high-flow cat that I swap in for emissions day, and run a test pipe the rest of the year.
Different areas have different laws on when a vehicle no longer has to be tested, also. In GA, any vehicle made before 1976 and any vehicle that was 25 years old or older were exempt from emissions testing. Where I'm at in TN, a car can never "age-out" of emissions testing - it's only exempt if it's pre 1976. Thankfully they are planning to eliminate testing in my county all together in the next couple of years.
Edit: !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Originally Posted by WECT News 6
September 28, 2018 at 11:17 AM EDT - Updated December 1 at 6:01 PMBRUNSWICK COUNTY, NC (WECT) -
Starting December 1, Brunswick County will be among 26 counties that will no longer require vehicle emissions testing, according to the North Carolina Department of Environmental Quality.
Starting December 1, Brunswick County will be among 26 counties that will no longer require vehicle emissions testing, according to the North Carolina Department of Environmental Quality.
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