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Guygan t1_j5ws80g wrote

You only need to get an emissions inspection if your car is registered in Cumberland County. In all other counties there's no emissions testing.

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eljefino t1_j5ye3pe wrote

You can't emit visible smoke for more than 5 seconds at a time but it's up to the cops to enforce. There isn't an emissions check at state inspection time aside from the Cumberland County OBD check on vehicles under a certain weight, and that the exhaust system is complete and not leaking.

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Moot_n_aboot t1_j61clr0 wrote

If the state inspection guys don’t get on you about lack of a diesel emissions system the EPA has been becoming more and more aggressive with enforcing regulations. Do with that what you may.

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Moot_n_aboot t1_j61d2pw wrote

You modify the fuel system to dump too much diesel into the engine to the point that it doesn’t burn all the way and it pukes out a massive cloud of dark black smoke. It looks like a coal smoke. That where the name comes from.

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