Emissions States..
#1
Emissions States..
For those of you who live in states that do emissions testing, what are your intended power mods? I am assuming that long tube headers and off road x pipes are out of the question?
#4
#5
In Maryland, they have completely done away with the dyno rollers, and just plug up to your OBDII port to check for engine codes. If you have none, you pass. There is always the possibility of a visual inspection, but they are randomly selected - not every car is subject to it.
#6
Cobra Member
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
Join Date: October 15, 2008
Location: Brew City
Posts: 1,373
Likes: 0
Received 0 Likes
on
0 Posts
#7
In California, as long as the part has a CARB EO# on it, it's good to go. Most superchargers have that. Very few CAI's have it. For exhaust, you can't remove the factory cats. And long tube headers are illegal. Some shortie headers are legal though.
#8
![Icon Mrgreen](https://themustangsource.com/forums/images/smilies/icon_mrgreen.gif)
#9
Legacy TMS Member
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
Ugh. I hate this state for modding cars. **** hippies.
#10
Mach 1 Member
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
Join Date: August 30, 2004
Location: NJ
Posts: 690
Likes: 0
Received 0 Likes
on
0 Posts
#11
Georgia has emissions in the Atlanta metro area, which is fairly wide reaching, and gets draconian with older vehicles. Newer vehicles just do a gas cap test and OBD code test. Anything from 1995 and before gets the full run around including a full catalytic converter inspection and an ASM2 test and an exhaust emission check.
I'm pretty sure the sum of it is that you may have to keep the stock exhaust on cars in the covered area. Not sure though, never heard of anyone sneaking by, though the tests are nothing like California's.
I'm pretty sure the sum of it is that you may have to keep the stock exhaust on cars in the covered area. Not sure though, never heard of anyone sneaking by, though the tests are nothing like California's.
#12
Legacy TMS Member
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
#14
Shelby GT350 Member
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
The best mods you can do is a tune with a CAI so you can return it back to stock when testing comes. Plus a cat back but thats for sound and not much power gain.
#15
GTR Member
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
Every state is an emissions state.
96 and newer cars are all OBDII so most areas that test on those cars is just a plug-in.
95 and older get the rollers and tailpipe sniffer.
Emissions testing in states other than CA. is dependent on population density for how much testing they have to do.
Here in Texas, Harris county(Houston) and the five counties surrounding get tested, Bexar county(San Antonio) gets tested, and Dallas and Tarant counties(Dallas/Ft.Worth) and the surrounding counties get tested, all other counties in Texas sqeak by with just a safety inspection.
I have never had any inspector look under my car to check the cats, had one squeak about a CAI but didn't hold me up. Basically on aything undercar it is "don't ask, don't tell" so long as it passes OBDII or the sniffer.
96 and newer cars are all OBDII so most areas that test on those cars is just a plug-in.
95 and older get the rollers and tailpipe sniffer.
Emissions testing in states other than CA. is dependent on population density for how much testing they have to do.
Here in Texas, Harris county(Houston) and the five counties surrounding get tested, Bexar county(San Antonio) gets tested, and Dallas and Tarant counties(Dallas/Ft.Worth) and the surrounding counties get tested, all other counties in Texas sqeak by with just a safety inspection.
I have never had any inspector look under my car to check the cats, had one squeak about a CAI but didn't hold me up. Basically on aything undercar it is "don't ask, don't tell" so long as it passes OBDII or the sniffer.
#16
Every state is an emissions state.
96 and newer cars are all OBDII so most areas that test on those cars is just a plug-in.
95 and older get the rollers and tailpipe sniffer.
Emissions testing in states other than CA. is dependent on population density for how much testing they have to do.
Here in Texas, Harris county(Houston) and the five counties surrounding get tested, Bexar county(San Antonio) gets tested, and Dallas and Tarant counties(Dallas/Ft.Worth) and the surrounding counties get tested, all other counties in Texas sqeak by with just a safety inspection.
I have never had any inspector look under my car to check the cats, had one squeak about a CAI but didn't hold me up. Basically on aything undercar it is "don't ask, don't tell" so long as it passes OBDII or the sniffer.
96 and newer cars are all OBDII so most areas that test on those cars is just a plug-in.
95 and older get the rollers and tailpipe sniffer.
Emissions testing in states other than CA. is dependent on population density for how much testing they have to do.
Here in Texas, Harris county(Houston) and the five counties surrounding get tested, Bexar county(San Antonio) gets tested, and Dallas and Tarant counties(Dallas/Ft.Worth) and the surrounding counties get tested, all other counties in Texas sqeak by with just a safety inspection.
I have never had any inspector look under my car to check the cats, had one squeak about a CAI but didn't hold me up. Basically on aything undercar it is "don't ask, don't tell" so long as it passes OBDII or the sniffer.
First: There are several states with absolutely no emissions testing. Florida, for example.
Second: By most state guidelines, inspectors are required to check for a cat. Does that mean they actually do? No, not usually, unless you give them a reason to.
My old RX8 was quite loud, but had a resonated mid-pipe. I got screened for no cat, but luckily the resonator happened to look just like one, had a bung for an O2 sensor as well. With a tune defeating the rear O2 sensor, it was a win-win situation.
#17
GTR Member
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
Whether the state does emission testing or not, all 50 U.S. states are emission states per federal law.
As far as being required to check for cats, I'm sure all states are but at least in Texas they don't unless the car fails either the sniffer on older OBDI cars or has a cat related code come up on OBDII plug-in test.
And in Texas, once the car is more than 24 model years old it doesn't have to pass any emissions test.
As far as being required to check for cats, I'm sure all states are but at least in Texas they don't unless the car fails either the sniffer on older OBDI cars or has a cat related code come up on OBDII plug-in test.
And in Texas, once the car is more than 24 model years old it doesn't have to pass any emissions test.
#18
Whether the state does emission testing or not, all 50 U.S. states are emission states per federal law.
As far as being required to check for cats, I'm sure all states are but at least in Texas they don't unless the car fails either the sniffer on older OBDI cars or has a cat related code come up on OBDII plug-in test.
And in Texas, once the car is more than 24 model years old it doesn't have to pass any emissions test.
As far as being required to check for cats, I'm sure all states are but at least in Texas they don't unless the car fails either the sniffer on older OBDI cars or has a cat related code come up on OBDII plug-in test.
And in Texas, once the car is more than 24 model years old it doesn't have to pass any emissions test.
![Woot](https://themustangsource.com/forums/images/smilies/woot.gif)
Only 20 more years to go.
#19
Mach 1 Member
![](https://themustangsource.com/forums/images/rank.gif)
![](https://themustangsource.com/forums/images/rank.gif)
Join Date: November 3, 2009
Location: Atlanta
Posts: 626
Likes: 0
Received 0 Likes
on
0 Posts
Georgia has emissions in the Atlanta metro area, which is fairly wide reaching, and gets draconian with older vehicles. Newer vehicles just do a gas cap test and OBD code test. Anything from 1995 and before gets the full run around including a full catalytic converter inspection and an ASM2 test and an exhaust emission check.
#20
So if you do get checked using the port what exactly can you get away with? Can you go xpipe with exhaust,headers, and CAI as long as you run a tune to delete the CEL? Sorry for the dumb question, but this is the first time I have lived in a state that does emissions testing.