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Originally Posted by b1adesofcha0s
What is an emission sniffing van and why should I be worried about it? What about people with HFC's, will they be an issue as well? I don't have one yet but will get one eventually.
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Its a moble emissions testing center. Basically they set up at an acceleration point on a highway onramp and have some gas sensors and cameras. As your car passes through the setup it measures a sample of the gasses your car is releasing and if you are putting out too much bad stuff (I.e. test pipe cars) they snap a pic and then im not sure if they send you a ticket or require you to go to a testing center.
HFC cars should be ok, not 100% sure. Test pipe cars will fail. You can try to get around them by just coasting by at idle... preferably at a high enough speed that you don't give them a good sample.