Are Flowmaster 10 mufflers illegal? - Mustang Evolution

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Old 10-25-2012, 06:34 PM   #1
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Are Flowmaster 10 mufflers illegal?

I was reading somewhere that are illegal and you won't pass emissions. Can anybody clarify.?
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Old 10-25-2012, 06:35 PM   #2
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Lol yes they are. Anything you do after the cats is legal
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Old 10-25-2012, 07:01 PM   #3
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There are some states and cities that do not allow you to increase the sound
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Old 10-25-2012, 07:09 PM   #4
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Yea I know. But there some cars that come loud stock
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Old 10-25-2012, 07:35 PM   #5
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It all depends on where you are. In Texas, my exhaust would get inspected annually which included a test of the exhaust emissions. Here in Florida though, there's no inspection whatsoever. Basically, the cops here say that as long as it isn't overly loud, they won't give you a second look. But like I said, it depends on where you are and if the cop is having a bad day or not haha.
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Old 10-25-2012, 08:24 PM   #6
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Well I live in California and they're strict here about emissions. Not sure about sound. But I was thinking of running them on my v6. Would it be that loud for cops to pull me over.?
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Old 10-25-2012, 08:27 PM   #7
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Lol no especially on a v6. Just as long as u don't revv it to 4k when next to them you will ok. I live in cali and have bassani xpipe with borla catback on a v8 and never told me anything
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Old 10-25-2012, 08:31 PM   #8
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Quote:
Originally Posted by ramosjose16 View Post
Well I live in California and they're strict here about emissions. Not sure about sound. But I was thinking of running them on my v6. Would it be that loud for cops to pull me over.?
Just hold onto the stock mufflers and put them back on when it comes time to get your car inspected
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Old 10-25-2012, 08:41 PM   #9
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Quote:
Originally Posted by ramosjose16 View Post
Well I live in California and they're strict here about emissions. Not sure about sound. But I was thinking of running them on my v6. Would it be that loud for cops to pull me over.?
93 decibals is the legal limit in Cali, but almost no cops actually care. I know a guy with a 69 Firebird with a built 455 swap, he sets off car alarms just by starting it up, its loud as hell. But he never got pulled over.

---------- Post added at 06:41 PM ---------- Previous post was at 06:40 PM ----------

Quote:
Originally Posted by Florida3.7L View Post
Just hold onto the stock mufflers and put them back on when it comes time to get your car inspected
In Cali, anything after the cats is legal for inspection so as long as it isn't overly loud he is good.
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Old 10-25-2012, 08:48 PM   #10
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Quote:
Originally Posted by Soccerluvr4
93 decibals is the legal limit in Cali, but almost no cops actually care. I know a guy with a 69 Firebird with a built 455 swap, he sets off car alarms just by starting it up, its loud as hell. But he never got pulled over.

---------- Post added at 06:41 PM ---------- Previous post was at 06:40 PM ----------


In Cali, anything after the cats is legal for inspection so as long as it isn't overly loud he is good.
I don't think I'd reach 93 decibels with a true dual set up with stock cats right lol
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Old 10-25-2012, 08:54 PM   #11
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I don't think I'd reach 93 decibels with a true dual set up with stock cats right lol
Probably not, i heard somewhere that a lawnmower is around 95-100, so pretty much if you can talk over your exhaust you are good.
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Old 10-25-2012, 08:57 PM   #12
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Quote:
Originally Posted by Soccerluvr4
Probably not, i heard somewhere that a lawnmower is around 95-100, so pretty much if you can talk over your exhaust you are good.
Haha that's an awesome thing to hear.! Thanks a lot for your help. And everyone else who participated in the thread. I appreciate it!
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Old 10-25-2012, 09:10 PM   #13
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No problem
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Old 10-25-2012, 10:19 PM   #14
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I've got the 10s, and they're legal here.
the only requirement is having a muffler.
Cat's aren't even required.
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Old 10-26-2012, 12:42 AM   #15
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Originally Posted by alrefire View Post
I've got the 10s, and they're legal here.
the only requirement is having a muffler.
Cat's aren't even required.
Maybe in your state, he lives in Cali though...
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Old 10-26-2012, 01:21 AM   #16
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Cali has got to be the most anal state ever. So glad I'm in Texas. I don't even have emissions in my town. no worries on any tree hugger crap
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Old 10-26-2012, 07:40 AM   #17
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Quote:
Originally Posted by alrefire
I've got the 10s, and they're legal here.
the only requirement is having a muffler.
Cat's aren't even required.
Cats is a federal law, not state... It is a federal crime to remove cats
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Old 10-26-2012, 08:03 AM   #18
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Quote:
Originally Posted by lowflyn

Cats is a federal law, not state... It is a federal crime to remove cats
Yup..! My understanding is where I live the fine is like 10k and they can take your ride.
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Old 10-26-2012, 08:05 AM   #19
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Quote:
Originally Posted by lowflyn

Cats is a federal law, not state... It is a federal crime to remove cats
Dang
Look at this
To any person repairing or installing any exhaust system, the Clean Air Act, as amended 1990 requires that;

AFTERMARKET CATALYTIC CONVERTERS MAY ONLY BE INSTALLED IN THE FOLLOWING SITUATIONS

1. If the vehicle is missing a converter;*

2. If a state of local inspection program has determined that the existing converter has been lead-poisoned, damaged, or otherwise rendered ineffective and needs replacement. Retain a copy of this statement from any government inspection or enforcement agency for your records;

3. If the vehicle is over eight (8) years old, or has more than 80,000 miles AND a legitimate need for replacement has been established and documented. This situation normally would include only plugged converters or those damaged to the point where irreparable exhaust leaks are present. See documentation requirements below.

CATALYTIC CONVERTERS ARE EMISSION CONTROL DEVICES WHICH ARE DESIGNED TO LAST THE LIFE OF THE VEHICLE AND DO NOT NORMALLY REQUIRE REPLACEMENT. FURTHERMORE, IF THE VEHICLE IS PROPERLY USED AND MAINTAINED, ORIGINAL CONVERTERS ARE COVERED BY THE EMISSIONS CONTROL WARRANTY FOR EIGHT (8) YEARS OR 80,000 MILES. FEDERAL LAW PROHIBITS ANY PERSON FROM REPLACING THESE DEVICES EXCEPT UNDER LIMITED CIRCUMSTANCES (ABOVE).

The fines for "tampering" with the emissions parts of a vehicle can be up to $25,000.

Is this an issue that should be of concern for those looking to increase the performance of our cars? Is there a "legitimate need" that we can claim for replacing our OEM cats?
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Old 10-26-2012, 08:07 AM   #20
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Quote:
Originally Posted by alrefire

Dang
Look at this
To any person repairing or installing any exhaust system, the Clean Air Act, as amended 1990 requires that;

AFTERMARKET CATALYTIC CONVERTERS MAY ONLY BE INSTALLED IN THE FOLLOWING SITUATIONS

1. If the vehicle is missing a converter;*

2. If a state of local inspection program has determined that the existing converter has been lead-poisoned, damaged, or otherwise rendered ineffective and needs replacement. Retain a copy of this statement from any government inspection or enforcement agency for your records;

3. If the vehicle is over eight (8) years old, or has more than 80,000 miles AND a legitimate need for replacement has been established and documented. This situation normally would include only plugged converters or those damaged to the point where irreparable exhaust leaks are present. See documentation requirements below.

CATALYTIC CONVERTERS ARE EMISSION CONTROL DEVICES WHICH ARE DESIGNED TO LAST THE LIFE OF THE VEHICLE AND DO NOT NORMALLY REQUIRE REPLACEMENT. FURTHERMORE, IF THE VEHICLE IS PROPERLY USED AND MAINTAINED, ORIGINAL CONVERTERS ARE COVERED BY THE EMISSIONS CONTROL WARRANTY FOR EIGHT (8) YEARS OR 80,000 MILES. FEDERAL LAW PROHIBITS ANY PERSON FROM REPLACING THESE DEVICES EXCEPT UNDER LIMITED CIRCUMSTANCES (ABOVE).

The fines for "tampering" with the emissions parts of a vehicle can be up to $25,000.

Is this an issue that should be of concern for those looking to increase the performance of our cars? Is there a "legitimate need" that we can claim for replacing our OEM cats?
Shops around here won't remove them.. Unless you know someone they won't even work on the exhaust if they have been removed
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Old 10-26-2012, 08:12 AM   #21
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Quote:
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Shops around here won't remove them.. Unless you know someone they won't even work on the exhaust if they have been removed
Good thing the headers and x pipe are left.
That's gonna be a DIY project :p
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Old 10-26-2012, 09:14 AM   #22
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Reminds me of when I first got my exhaust done, I brought in a set of high flows to go with the rest of the exhaust, he looked at me funny and asked if I was really sure that I wanted to use any cats at all lmao
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Old 10-26-2012, 11:49 AM   #23
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There's a piss any law for everything. My town is a industrial city so emissions aren't even done. Is it that big of a deal? There's tons of people without cats lol.
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Old 10-26-2012, 12:22 PM   #24
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Like window tint laws :p
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