Do they do a 'sniffer' test?

If they only do a OBD test, then you have nothing to worry about. If they do a sniffer, then you will need a cat.

A TN local would chime in soon.

 

isn't stacey02 (i belive) in tN

 

We have emissions in cherokee county in GA too.
I think all OBDII cars are strictly an OBD test. We also have a visual inspection though, so the main cat needs to be there (which isn't a problem). I have a header with 2.5" mid pipe and had a high flow cat welded on, and nismo exhaust.

You should not have any issues running aftermarket exhaust if you space the second o2 sensor on the mid pipe.

 

what you can do is buy a high flow cat and take it all to a muffler shop with the header of your choice and say i need a midpipe to go from the header to the Catback with this CC in it. theyll make you a mid pipe (make sure they weld in an O2 bung) then install that and space out the 2nd O2 sensor. then its just a matter of buying the catback exhaust you want. or you could just do what i do and say f@%K it and keep your stock midpipe and run whatever exhaust you want and just reinstall your stock midpipe when you need to get emissions done.

 

And there you have it from the TN pros.

 

no bro im from roane county and had my old prelude straightpiped for like 2 yrs and drove in knox like all the time so u def got no worries.. TN is pretty lenient bout thing anyways or atleast from my experience they def let a lot of things slide unles u just come across a dickhead cop and thats another story lol

 

So im going to keep the original Manifold cat but its gone anyway. Can anyone send me a link about where to place my 02 sensor. Also do I have to go in a change my fuel. On my dads Harley you change the exhaust (yeah i know its a bike not a car) he has to have it remapped.

 

If you are moving the sensor itself, you have to move it behind the second cat. If you are removing the cat, then you have to use the two 'anti foulers' and space out the sensor so that it wouldn't throw a code.

 

TN is easy. Jus don't go if ur throwing codes. Nothin bout my car is "legal" but I don't have issues :-/ smh

tapatalk FTW

 

Ok I got this lol I'm a Sumner county native and have went through the same thing.
Go ahead and get a header, that should be the first thing you do to your car.
Now I had a shop called Pat's Automotive in Lafayette, TN put it on for me and they only charged $60, real cool guys.

The next step would be to put on the catback exhaust , any muffler shop should be good, I would recommend 4 way muffler in Gallatin, they've done work for me before.
Also have them weld in an o2 bung immediately after the catalytic converter, there should be 13 inches from where the o2 sensor is currently and where the new o2 bung is welded in.

This will cause a code to pop up on your car, there's a shop in Gallatin called "Public Safety Radio", it's near Guild Elementary school
(I can give you the address if you need it) they will be able to move your second o2 sensor behind the catalytic converter
and I believe they are the only shop in the county that can rewire it, trust me I looked forever.
Real cool guys here they charged me $55 to put it on and I would recommend getting a new o2 before going there,
just make sure you go to Autozone and pick up the correct sensor because they are made differently.

When it comes time for emissions you will have nothing worry about, there is no visual inspection just an OBD test also there is no sniffer test.
Doing what I explained will keep it legal and fairly cheap, you won't have to switch out parts for emissions or go through any hassle.
Just keep your main cat and enjoy life without the stock manifold.

As for sound and legality, TN as a whole is allowed to judge the sound how they wish but technically anything "loud and excessive"
could get you pulled over although I've had my exhaust on my car for over a year and been all over the state I've never been pulled over anywhere.
As for fuel, just by changing the header and exhaust will not require you to change your fuel or any fuel related parts. You would run into that if you were going turbo.
Hope this helps you out, if you have any questions feel free to ask.

 

Thank you so much your a life saver LOL. I will be in contact with you if i need anything else if thats ok..its nice to know I can get info on this stuff in my area.

Ok I got this lol I'm a Sumner county native and have went through the same thing.
Go ahead and get a header, that should be the first thing you do to your car.
Now I had a shop called Pat's Automotive in Lafayette, TN put it on for me and they only charged $60, real cool guys.

The next step would be to put on the catback exhaust , any muffler shop should be good, I would recommend 4 way muffler in Gallatin, they've done work for me before.
Also have them weld in an o2 bung immediately after the catalytic converter, there should be 13 inches from where the o2 sensor is currently and where the new o2 bung is welded in.

This will cause a code to pop up on your car, there's a shop in Gallatin called "Public Safety Radio", it's near Guild Elementary school
(I can give you the address if you need it) they will be able to move your second o2 sensor behind the catalytic converter
and I believe they are the only shop in the county that can rewire it, trust me I looked forever.
Real cool guys here they charged me $55 to put it on and I would recommend getting a new o2 before going there,
just make sure you go to Autozone and pick up the correct sensor because they are made differently.

When it comes time for emissions you will have nothing worry about, there is no visual inspection just an OBD test also there is no sniffer test.
Doing what I explained will keep it legal and fairly cheap, you won't have to switch out parts for emissions or go through any hassle.
Just keep your main cat and enjoy life without the stock manifold.

As for sound and legality, TN as a whole is allowed to judge the sound how they wish but technically anything "loud and excessive"
could get you pulled over although I've had my exhaust on my car for over a year and been all over the state I've never been pulled over anywhere.
As for fuel, just by changing the header and exhaust will not require you to change your fuel or any fuel related parts. You would run into that if you were going turbo.
Hope this helps you out, if you have any questions feel free to ask.

 

Damn. That is a write up on the laws in TN.

 

Yo man i live in the boro and I never see ya.