need some help/ info on obs exhaust system - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 10-22-2013, 03:22 PM Thread Starter Rookie
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need some help/ info on obs exhaust system

forgive my newbie obs/7.3 ignorance. im looking for some help planning to buy an obs with 7.3 from out of my current state of ct and bring it here. the truck i looked at looks like they straight piped it? there's a section of pipe that was added in just past the down pipe along the passenger side frame. in order to register in my state i have to go through an emission test where they say they check the system physically and make sure it passes the smog test by lmd or msa. is there a way to run a vin check to see if the truck came with a cat or a sticker someplace that would verify a cat? heres the link to my state diesel emission test, on my old truck an 04 dmax i think they just ran an obd test but they always ran a mirror down the length of exhaust to make sure it was complete but i think they may have also put a sensor in the pipe to check also. they have a live screen of the emission testing bay at the shop i go to and i think theyre required to video the process for security purposes. thanks for any info you guys might have.
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post #2 of 2 Old 10-22-2013, 03:50 PM
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Is it an emission test or smoke test? Go to Walker exhaust and look at the diagram, it will show the year and the exhaust schematic, some came with cats, but I think over a certain weight from the factory there was none, just a muffler, we got lucky here in NJ there are no inspection or self inspection on diesels 96 and older.
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