Cats?

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Jan 20, 2007 | 09:24 AM

ChevmaninaFord

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From: Gray's Creek, NC

Cats?

I talked to a muffler shop here in Greenville, NC and he said removing the back cats would trip the rear O2 sensor, what about the pre-cats??(I dont know what theyre called) Would removing these cause me to not pass inspection under the new laws?

Jan 20, 2007 | 10:20 AM

SuperSnake

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From: North of Normal

Yes if you remove them you will fail the inspection. I can't say about the location of the cats best I can say talk to someone who does inspections.

Jan 20, 2007 | 10:40 AM

InstantGrits

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From: In The Past

The easiest thing to remember is if it was on the truck from factory it has to be there for NC OBD2 inspection.

Jan 20, 2007 | 12:44 PM

ChevmaninaFord

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From: Gray's Creek, NC

Well thats no good, was Ford having trouble passing emissions because Chevy and Dodge only have one pair?

Jan 20, 2007 | 12:55 PM

InstantGrits

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From: In The Past

Truth be known I only know from the inspectors side. Not sure why its done that way. Sorry man, I aint much help.

Jan 20, 2007 | 01:14 PM

ncfirefighter46

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i have changed some on chuckyes (chevy) that had pre and aft. o2 sensors, and yes you will get a code if they are not there and the engine will run crappy, best thing to do on a 96 and newer is to buy the pefromer exhaust made for the o2 sensors, they do make them and high out put cats and do some mods and programming to the truck to get the high output if that is what you are looking for. if it is just changing the exhaust, then buy the kit mad to replace the factory a lot of compines offer them and they are not really that cheap but it is the right way to go and pass the OBD II

Jan 20, 2007 | 01:55 PM

ChevmaninaFord

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From: Gray's Creek, NC

I've changed my exhaust enough, I was just trying to find out why the Fords were different, thanks for all the help. My Dynomax Bullet is pretty loud, I just wish it would idle louder.