removing cats, is it illegal?
Senior Member
Joined: Jun 2010
Posts: 16,662
Hi Will,
You didn't provide us with much info as to the year of the vehicle. If it has converters and it is with oxygen sensors before and after the converters it could get complicated.
Depending on what kind of engine and fuel system , difficult to provide a worthwhile answer.
You didn't provide us with much info as to the year of the vehicle. If it has converters and it is with oxygen sensors before and after the converters it could get complicated.
Depending on what kind of engine and fuel system , difficult to provide a worthwhile answer.
Thread Starter
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Junior Member
Joined: Sep 2013
Posts: 20
I wonder then, here in michigan I've had my truck now 12 yrs and I've never had that inspection. I guess any muffler shop should be able to tell me........what about the O2 sensors? Thanks for your quick reply rusty
Thread Starter
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Junior Member
Joined: Sep 2013
Posts: 20
Hi Will,
You didn't provide us with much info as to the year of the vehicle. If it has converters and it is with oxygen sensors before and after the converters it could get complicated.
Depending on what kind of engine and fuel system , difficult to provide a worthwhile answer.
You didn't provide us with much info as to the year of the vehicle. If it has converters and it is with oxygen sensors before and after the converters it could get complicated.
Depending on what kind of engine and fuel system , difficult to provide a worthwhile answer.
2000 f150 v6 4.2 I believe its the essex eng
Thanks for the quick reply hanky
Thread Starter
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Junior Member
Joined: Sep 2013
Posts: 20
Hi hanky. Just as you were replying to me I was just replying to rusty and iwas wondering about that. Normaly on my home comp. I think it shows all that but wasnt sure if this mobile did. I wanted to know about the O2 sens
2000 f150 v6 4.2 I believe its the essex eng
Thanks for the quick reply hanky
2000 f150 v6 4.2 I believe its the essex eng
Thanks for the quick reply hanky
Senior Member
Joined: Jan 2007
Posts: 2,209
From: Yorkshire, NY
Well, technically it's a Federal offense (read $5000 fine) for anybody to remove a known good working catalytic converter (just saying 
). Here in NY, anything built after 1983 is required to have a converter to pass inspection. Also, the converter(s) that Ford uses are normally large enough to decently flow a 460 CID engine. As far as how the engine will run would be by trial and error. The computer will always stick its pesky little electrons in the mix, but the better you can get the exhaust to flow out of the cylinders the better the engine will perform.
). Here in NY, anything built after 1983 is required to have a converter to pass inspection. Also, the converter(s) that Ford uses are normally large enough to decently flow a 460 CID engine. As far as how the engine will run would be by trial and error. The computer will always stick its pesky little electrons in the mix, but the better you can get the exhaust to flow out of the cylinders the better the engine will perform.
Last edited by Use Common Sense; Sep 8, 2014 at 08:10 AM.
Thread Starter
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Junior Member
Joined: Sep 2013
Posts: 20
Well, technically it's a Federal offense (read $5000 fine) for anybody to remove a known good working catalytic converter (just saying ). Here in NY, anything built after 1983 is required to have a converter to pass inspection. Also, the converter(s) that Ford uses are normally large enough to decently flow a 460 CID engine. As far as how the engine will run would be by trial and error. The computer will always stick its pesky little electrons in the mix, but the better you can get the exhaust to flow out of the cylinders the better the engine will perform.
). Here in NY, anything built after 1983 is required to have a converter to pass inspection. Also, the converter(s) that Ford uses are normally large enough to decently flow a 460 CID engine. As far as how the engine will run would be by trial and error. The computer will always stick its pesky little electrons in the mix, but the better you can get the exhaust to flow out of the cylinders the better the engine will perform.
Senior Member
Joined: Mar 2012
Posts: 896
first off, it must have the cat. cons. to run without the check engine lite coming on. no exhaust shop can cut those out without replacing them. on that new of a truck the pcm or the computer runs it all. and Rusty here in Missouri if you have one that is older than 1981 you can cut them out and get away with it.
Senior Member
Joined: Jan 2008
Posts: 506
first off, it must have the cat. cons. to run without the check engine lite coming on. no exhaust shop can cut those out without replacing them. on that new of a truck the pcm or the computer runs it all. and Rusty here in Missouri if you have one that is older than 1981 you can cut them out and get away with it.