Dual exhaust
Senior User
Joined: Sep 2003
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I am also interested in this. The current stock y-pipe sounds good, but I would like to get more power if it is significant. I have heard that an h-pipe will actually produce more power than straight duals on the Winsor engines. Is this true?
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Joined: Oct 2000
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There isn't a true dual system for the 87-96 Bronco's because it isn't legal to run true duals due to the fact that the exhaust converges into one before going through the catalytic converter. An exhaust shop might make up a custom system for you, but your better bet is to buy a new high-flow Y-pipe and replace the exhaust after the Y-pipe.
I know Greystreak and a couple of others have used a Bassani Y-pipe and are happy with it. Do a search on this subject in the Bronco forum, lots of good information.
I know Greystreak and a couple of others have used a Bassani Y-pipe and are happy with it. Do a search on this subject in the Bronco forum, lots of good information.
Senior User
Joined: Nov 2003
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From: Butler, PA
"There isn't a true dual system for the 87-96 Bronco's because it isn't legal to run true duals due to the fact that the exhaust converges into one before going through the catalytic converter."
I'm not sure about that, because where I live, you don't even need a catalytic converter. So check your local laws and you may find you can get away with some stuff.
I'm not sure about that, because where I live, you don't even need a catalytic converter. So check your local laws and you may find you can get away with some stuff.
Senior User
Joined: Nov 2003
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From: Butler, PA
Is that a federal law? I don't really know much about all the laws, but my friend had his exhaust done professionally, and they told him that he would still pass inspection without a catalytic converter, so I figured it was a local law. Perhaps I'm wrong.
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Joined: May 2003
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From: South Ga
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Joined: Jun 2001
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From: Loveland, CO.
All they do is look to see if you have one (or two) cats. If you put gutted cats on there and your emission is low enough, you will pass.
If you want true duals, put a "fake" inline cat on each side and it will pass, as long as the emission is low enough to pass.
Your emission might be low enough without visible cats, but you will fail the visual test for not having them.
If you want true duals, put a "fake" inline cat on each side and it will pass, as long as the emission is low enough to pass.
Your emission might be low enough without visible cats, but you will fail the visual test for not having them.
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Joined: Jun 2003
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From: Atlanta Georgia
I have to pass Emissions where I live.
If you go to a custom shop, they can run true duals with 2 cats, one on each pipe.
That is as long as the original cats have been removed or are no longer performing properly.
And when I say custom shop I dont mean midas, thats a retail shop.
I have never seen a car with a hollowed out cat pass emissions.
If you go to a custom shop, they can run true duals with 2 cats, one on each pipe.
That is as long as the original cats have been removed or are no longer performing properly.
And when I say custom shop I dont mean midas, thats a retail shop.
I have never seen a car with a hollowed out cat pass emissions.
Freshman User
Joined: Jan 2003
Posts: 39
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From: Dunedin, Fl
I don't know about all these y pipes, and cats and stuff, but I do know this, Do not have them exit out of the sides like behind the rear tires. I have it like that and everytime I put down my rear window I get fumes like crazy. I like the smell of gas, but not like that. Just my 2 cents.
Woody
Woody
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Joined: May 2003
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From: South Ga
Originally posted by Gacknar
That is as long as the original cats have been removed or are no longer performing properly.
That is as long as the original cats have been removed or are no longer performing properly.
Again the custom shop, beeleave me, knows the law.
Senior User
Joined: Mar 2003
Posts: 194
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From: Port Richey FL.
i did it my self .headers ( longs is what i used ..i got a good deal on them then i ran the pipes to 2 of the new cherry bomb muff's.
then straight out the back ..and man it sounds mean ..not to load
but a nice tough rumble..i love it. and have much better performance..I finally got to use my new mig welder.very happy.and in my county in florida there is no emisions checks..How ever if you get pulled over bya state trouper i will get a ticket .but o well i will take the chance..lol good luck
then straight out the back ..and man it sounds mean ..not to load
but a nice tough rumble..i love it. and have much better performance..I finally got to use my new mig welder.very happy.and in my county in florida there is no emisions checks..How ever if you get pulled over bya state trouper i will get a ticket .but o well i will take the chance..lol good luck
Posting Guru
Joined: Sep 2002
Posts: 2,195
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From: San Antonio, Texas
You know if you have the pipes exit out the back, your rear glass is gonna get black from the exhaust. Also if you open your back windoe while driving your gonna get all the exhaust into the cab.
Just lettin you know.
Just lettin you know.