im getting my exhaust system done at a shop and someone told me if i take the catalytic converter out you will loose some torque. is this true? if it is then how much horse power would a performance catalytic converter give you.....thanks
catalytic converter - 6G Celicas Forums
catalytic converters don't really affect your hp/torque anymore..
The technology used in catalytic converters today makes it so that they don't really hinder your flow and should be LEFT IN PLACE....all your going to do is pollute more and fail emmissions.....
The technology used in catalytic converters today makes it so that they don't really hinder your flow and should be LEFT IN PLACE....all your going to do is pollute more and fail emmissions.....
On a 95 car though, it might not hurt to get a new one. They do wear out. Mine on my 94 was fine when I took it off though.
Live Free, Be Happy
hey sory i know i already asked this question but i didnt askt the question clearly......
when getting a cat bak system and getting my piping bigger...........what is the diff between keeping my stock catalytic converter, vs a performance catalytic converter vs. no catalytic converter on a 95 celica.
thanks for u guys help lata
when getting a cat bak system and getting my piping bigger...........what is the diff between keeping my stock catalytic converter, vs a performance catalytic converter vs. no catalytic converter on a 95 celica.
thanks for u guys help lata
the flow of air is less restricted with a performance catalytic, if u have no problems with passin the smog test u shouldn't even have one just take it off, u'll have easier air flow
boost fixes it all
You should probably think about the environment and at least have a streetable sports cat tho... 
www.tangcla.com- photographyCanon EOS 5D Mark II | EOS 1D Mark II N | 16-35mm f/2.8L|24-70mm f/2.8L| 70-200mm f/2.8LIS15mm f/2.8 fisheye | 85mm f/1.8 | 100mm f/2.8 macro | 580EX-II x2
truth is u gain nothin from a catalytic converter but unless u get a really good one (which i havent found) it'll restrict the air flow which makes u lose power, if u take it out, ur def not gonna pass emisions but u'll get better air flow.. and its true cus we did it on my buddys maxima better wit out it but hes got no problems on passin emisions
boost fixes it all
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you will not pass emissions without one....
and they don't impead the flow enough to make a sizable/noticable difference (maybe 1hp)
stay smart, keep the air clean, keep your cat!
www.magnaflow.com for "performance" cats
QUOTE(thedro @ Jan 25, 2006 - 2:51 AM) [snapback]383907[/snapback]
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truth is u gain nothin from a catalytic converter but unless u get a really good one (which i havent found) it'll restrict the air flow which makes u lose power, if u take it out, ur def not gonna pass emisions but u'll get better air flow.. and its true cus we did it on my buddys maxima better wit out it but hes got no problems on passin emisions
truth is u gain nothin from a catalytic converter but unless u get a really good one (which i havent found) it'll restrict the air flow which makes u lose power, if u take it out, ur def not gonna pass emisions but u'll get better air flow.. and its true cus we did it on my buddys maxima better wit out it but hes got no problems on passin emisions
you will not pass emissions without one....
and they don't impead the flow enough to make a sizable/noticable difference (maybe 1hp)
stay smart, keep the air clean, keep your cat!
www.magnaflow.com for "performance" cats
Muffler guy told me...."Piping size don't matter, Its your Muffler that counts"
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Muffler guy lied. It all matters.
QUOTE(soulshadow @ Jan 25, 2006 - 1:28 PM) [snapback]384062[/snapback]
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Muffler guy told me...."Piping size don't matter, Its your Muffler that counts"
Muffler guy told me...."Piping size don't matter, Its your Muffler that counts"
Muffler guy lied. It all matters.
Live Free, Be Happy
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Best performance muffler is NO muffler...
QUOTE(soulshadow @ Jan 25, 2006 - 6:28 PM) [snapback]384062[/snapback]
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Muffler guy told me...."Piping size don't matter, Its your Muffler that counts"
Muffler guy told me...."Piping size don't matter, Its your Muffler that counts"
Best performance muffler is NO muffler...
"It's ok to be naked girl... I'm an artist!"1995 AT200 Celica ST:stocked out daily driver...1984 AE86 Corolla GT-SR5:silvertop 20V 4AGE project car jacked up with goodies...1991 SW2x MR2 n/a:bare bones hardtop model soon to be...
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Is that entirely true? My celica's muffler fell off, and I tell ya. Its not performing as well as it use to.
QUOTE(Kwanza26 @ Jan 26, 2006 - 1:43 AM) [snapback]384340[/snapback]
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Best performance muffler is NO muffler...
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QUOTE(soulshadow @ Jan 25, 2006 - 6:28 PM) [snapback]384062[/snapback]
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Muffler guy told me...."Piping size don't matter, Its your Muffler that counts"
Muffler guy told me...."Piping size don't matter, Its your Muffler that counts"
Best performance muffler is NO muffler...
Is that entirely true? My celica's muffler fell off, and I tell ya. Its not performing as well as it use to.
>
If that belief makes you feel better... that's fine. I'm not here to convince you.
QUOTE(pokemeintheeye @ Jan 26, 2006 - 11:17 PM) [snapback]384918[/snapback]
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Is that entirely true? My celica's muffler fell off, and I tell ya. Its not performing as well as it use to.
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QUOTE(Kwanza26 @ Jan 26, 2006 - 1:43 AM) [snapback]384340[/snapback]
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Best performance muffler is NO muffler...
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QUOTE(soulshadow @ Jan 25, 2006 - 6:28 PM) [snapback]384062[/snapback]
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Muffler guy told me...."Piping size don't matter, Its your Muffler that counts"
Muffler guy told me...."Piping size don't matter, Its your Muffler that counts"
Best performance muffler is NO muffler...
Is that entirely true? My celica's muffler fell off, and I tell ya. Its not performing as well as it use to.
If that belief makes you feel better... that's fine. I'm not here to convince you.
"It's ok to be naked girl... I'm an artist!"1995 AT200 Celica ST:stocked out daily driver...1984 AE86 Corolla GT-SR5:silvertop 20V 4AGE project car jacked up with goodies...1991 SW2x MR2 n/a:bare bones hardtop model soon to be...
>
That's just in your head. There's no reason it would preform better with a muffler. Mufflers are just there to creat tone, and muffle noise.
QUOTE(pokemeintheeye @ Jan 26, 2006 - 6:17 PM) [snapback]384918[/snapback]
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Is that entirely true? My celica's muffler fell off, and I tell ya. Its not performing as well as it use to.
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QUOTE(Kwanza26 @ Jan 26, 2006 - 1:43 AM) [snapback]384340[/snapback]
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>
Best performance muffler is NO muffler...
>
QUOTE(soulshadow @ Jan 25, 2006 - 6:28 PM) [snapback]384062[/snapback]
>
Muffler guy told me...."Piping size don't matter, Its your Muffler that counts"
Muffler guy told me...."Piping size don't matter, Its your Muffler that counts"
Best performance muffler is NO muffler...
Is that entirely true? My celica's muffler fell off, and I tell ya. Its not performing as well as it use to.
That's just in your head. There's no reason it would preform better with a muffler. Mufflers are just there to creat tone, and muffle noise.
Live Free, Be Happy
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I'm not asking to be convinced. I'm just asking? Is it entirely true?
QUOTE(Kwanza26 @ Jan 26, 2006 - 11:36 PM) [snapback]384931[/snapback]
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If that belief makes you feel better... that's fine. I'm not here to convince you.
>
QUOTE(pokemeintheeye @ Jan 26, 2006 - 11:17 PM) [snapback]384918[/snapback]
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Is that entirely true? My celica's muffler fell off, and I tell ya. Its not performing as well as it use to.
>
QUOTE(Kwanza26 @ Jan 26, 2006 - 1:43 AM) [snapback]384340[/snapback]
>
>
Best performance muffler is NO muffler...
>
QUOTE(soulshadow @ Jan 25, 2006 - 6:28 PM) [snapback]384062[/snapback]
>
Muffler guy told me...."Piping size don't matter, Its your Muffler that counts"
Muffler guy told me...."Piping size don't matter, Its your Muffler that counts"
Best performance muffler is NO muffler...
Is that entirely true? My celica's muffler fell off, and I tell ya. Its not performing as well as it use to.
If that belief makes you feel better... that's fine. I'm not here to convince you.
I'm not asking to be convinced. I'm just asking? Is it entirely true?
>
Ummm no its not in my head. I've had two cars where I bought with a rusted exhaust and the muffler fell off. Didn't have the funds to fix it so I just had to deal with it till I could get it fixed. It never performed any better. Low end would feel weaker too.
QUOTE(Bigmeanbulldog55 @ Jan 27, 2006 - 12:00 AM) [snapback]384941[/snapback]
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That's just in your head. There's no reason it would preform better with a muffler. Mufflers are just there to creat tone, and muffle noise.
>
QUOTE(pokemeintheeye @ Jan 26, 2006 - 6:17 PM) [snapback]384918[/snapback]
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Is that entirely true? My celica's muffler fell off, and I tell ya. Its not performing as well as it use to.
>
QUOTE(Kwanza26 @ Jan 26, 2006 - 1:43 AM) [snapback]384340[/snapback]
>
>
Best performance muffler is NO muffler...
>
QUOTE(soulshadow @ Jan 25, 2006 - 6:28 PM) [snapback]384062[/snapback]
>
Muffler guy told me...."Piping size don't matter, Its your Muffler that counts"
Muffler guy told me...."Piping size don't matter, Its your Muffler that counts"
Best performance muffler is NO muffler...
Is that entirely true? My celica's muffler fell off, and I tell ya. Its not performing as well as it use to.
That's just in your head. There's no reason it would preform better with a muffler. Mufflers are just there to creat tone, and muffle noise.
Ummm no its not in my head. I've had two cars where I bought with a rusted exhaust and the muffler fell off. Didn't have the funds to fix it so I just had to deal with it till I could get it fixed. It never performed any better. Low end would feel weaker too.
Maybe something crawled in and clogged it. 
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So you're not sure it's entirely true... therefore you want me to convince you with some facts... right? Umm... how's common sense? What does "muffler" mean?
QUOTE(pokemeintheeye @ Feb 1, 2006 - 12:37 AM) [snapback]387189[/snapback]
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I'm not asking to be convinced. I'm just asking? Is it entirely true?
I'm not asking to be convinced. I'm just asking? Is it entirely true?
So you're not sure it's entirely true... therefore you want me to convince you with some facts... right? Umm... how's common sense? What does "muffler" mean?
"It's ok to be naked girl... I'm an artist!"1995 AT200 Celica ST:stocked out daily driver...1984 AE86 Corolla GT-SR5:silvertop 20V 4AGE project car jacked up with goodies...1991 SW2x MR2 n/a:bare bones hardtop model soon to be...
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Well, with no muffler often comes backfire. That kind of backfire can't be good for performance.
QUOTE(Kwanza26 @ Feb 1, 2006 - 1:17 AM) [snapback]387212[/snapback]
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So you're not sure it's entirely true... therefore you want me to convince you with some facts... right? Umm... how's common sense? What does "muffler" mean?
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QUOTE(pokemeintheeye @ Feb 1, 2006 - 12:37 AM) [snapback]387189[/snapback]
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I'm not asking to be convinced. I'm just asking? Is it entirely true?
I'm not asking to be convinced. I'm just asking? Is it entirely true?
So you're not sure it's entirely true... therefore you want me to convince you with some facts... right? Umm... how's common sense? What does "muffler" mean?
Well, with no muffler often comes backfire. That kind of backfire can't be good for performance.
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You should just quit. Do some research. ALL A MUFFLER DOES IS MUFFLE SOUND!
QUOTE(pokemeintheeye @ Feb 3, 2006 - 12:23 AM) [snapback]388211[/snapback]
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Well, with no muffler often comes backfire. That kind of backfire can't be good for performance.
Well, with no muffler often comes backfire. That kind of backfire can't be good for performance.
You should just quit. Do some research. ALL A MUFFLER DOES IS MUFFLE SOUND!
"It's ok to be naked girl... I'm an artist!"1995 AT200 Celica ST:stocked out daily driver...1984 AE86 Corolla GT-SR5:silvertop 20V 4AGE project car jacked up with goodies...1991 SW2x MR2 n/a:bare bones hardtop model soon to be...
>
You don't know too much about performance, I take it from you posts. Just lisson to the guys who know things and have done things. Kwanza knows most everything you could ask about cars. And believe me, I've tested him, he knows. Trust that guy, and when he says the best performance muffler is no muffler, he is right. Look at some of his other posts. The only time I've seen him be wrong is when he's talking about drifting, the man doesn't know jack about FF cars drifting. lol, I'm just kidding.
QUOTE(pokemeintheeye @ Feb 2, 2006 - 7:23 PM) [snapback]388211[/snapback]
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Well, with no muffler often comes backfire. That kind of backfire can't be good for performance.
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QUOTE(Kwanza26 @ Feb 1, 2006 - 1:17 AM) [snapback]387212[/snapback]
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>
So you're not sure it's entirely true... therefore you want me to convince you with some facts... right? Umm... how's common sense? What does "muffler" mean?
>
QUOTE(pokemeintheeye @ Feb 1, 2006 - 12:37 AM) [snapback]387189[/snapback]
>
I'm not asking to be convinced. I'm just asking? Is it entirely true?
I'm not asking to be convinced. I'm just asking? Is it entirely true?
So you're not sure it's entirely true... therefore you want me to convince you with some facts... right? Umm... how's common sense? What does "muffler" mean?
Well, with no muffler often comes backfire. That kind of backfire can't be good for performance.
You don't know too much about performance, I take it from you posts. Just lisson to the guys who know things and have done things. Kwanza knows most everything you could ask about cars. And believe me, I've tested him, he knows. Trust that guy, and when he says the best performance muffler is no muffler, he is right. Look at some of his other posts. The only time I've seen him be wrong is when he's talking about drifting, the man doesn't know jack about FF cars drifting. lol, I'm just kidding.
Live Free, Be Happy
muffler = flow restriction
no muffler = no restriction
wow we wonder why none is better?!
no muffler = no restriction
wow we wonder why none is better?!
Like I said. I'm getting backfire cause my mufflers gone. That can't be good for performance.
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You just don't get it, do you? I have never seen someone so bullheaded and stuck in there ways. I take that back, there is a few. But over something so simple, no, there aren't many.
QUOTE(pokemeintheeye @ Feb 7, 2006 - 8:37 PM) [snapback]390404[/snapback]
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Like I said. I'm getting backfire cause my mufflers gone. That can't be good for performance.
Like I said. I'm getting backfire cause my mufflers gone. That can't be good for performance.
You just don't get it, do you? I have never seen someone so bullheaded and stuck in there ways. I take that back, there is a few. But over something so simple, no, there aren't many.
Live Free, Be Happy
any one have a pic of the cat that bolts up 2 the manifold?? and what each of the flanges look like??
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You know, its great. I get a kick out of people like you. "Bullheaded and stuck in their ways."
QUOTE(Bigmeanbulldog55 @ Feb 8, 2006 - 2:15 AM) [snapback]390434[/snapback]
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You just don't get it, do you? I have never seen someone so bullheaded and stuck in there ways. I take that back, there is a few. But over something so simple, no, there aren't many.
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QUOTE(pokemeintheeye @ Feb 7, 2006 - 8:37 PM) [snapback]390404[/snapback]
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Like I said. I'm getting backfire cause my mufflers gone. That can't be good for performance.
Like I said. I'm getting backfire cause my mufflers gone. That can't be good for performance.
You just don't get it, do you? I have never seen someone so bullheaded and stuck in there ways. I take that back, there is a few. But over something so simple, no, there aren't many.
You know, its great. I get a kick out of people like you. "Bullheaded and stuck in their ways."
>
I'm actually a scientist. Bullheaded is for those who have only opinions. From a strictly scientific point of view what you are saying is impossable. It's like saying when I dropped my bowling ball, it fell faster than my marble. And I'm not making an anology about the scientist thing, that really is what I do. I don't work with cars, but it is what I do.
QUOTE(pokemeintheeye @ Feb 9, 2006 - 6:45 PM) [snapback]391448[/snapback]
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You know, its great. I get a kick out of people like you. "Bullheaded and stuck in their ways."
>
QUOTE(Bigmeanbulldog55 @ Feb 8, 2006 - 2:15 AM) [snapback]390434[/snapback]
>
>
You just don't get it, do you? I have never seen someone so bullheaded and stuck in there ways. I take that back, there is a few. But over something so simple, no, there aren't many.
>
QUOTE(pokemeintheeye @ Feb 7, 2006 - 8:37 PM) [snapback]390404[/snapback]
>
Like I said. I'm getting backfire cause my mufflers gone. That can't be good for performance.
Like I said. I'm getting backfire cause my mufflers gone. That can't be good for performance.
You just don't get it, do you? I have never seen someone so bullheaded and stuck in there ways. I take that back, there is a few. But over something so simple, no, there aren't many.
You know, its great. I get a kick out of people like you. "Bullheaded and stuck in their ways."
I'm actually a scientist. Bullheaded is for those who have only opinions. From a strictly scientific point of view what you are saying is impossable. It's like saying when I dropped my bowling ball, it fell faster than my marble. And I'm not making an anology about the scientist thing, that really is what I do. I don't work with cars, but it is what I do.
Live Free, Be Happy
dude your car isn't back firing at all...your hearing a little rumble here and there from normal engine functions you just don't know what your listening to. THE UNDOUBTED NON CONTROVERSIAL BEST MUFFLER IS NO MUFFLER AT ALL...they hinder flow bottom line...
i have a turbo jetta i have no muffler and its completely fine...
i've ran a celica with out a muffler and it was completely fine...
your celica like everyone elses will be fine without a muffler...
no muffler does not equal auto back fire......mufflers have nothing to do with backfiring
This post has been edited by playr158: Feb 9, 2006 - 7:24 PM
i have a turbo jetta i have no muffler and its completely fine...
i've ran a celica with out a muffler and it was completely fine...
your celica like everyone elses will be fine without a muffler...
no muffler does not equal auto back fire......mufflers have nothing to do with backfiring
This post has been edited by playr158: Feb 9, 2006 - 7:24 PM
I understand what he said about the loss of low end power with no muffler - you do tend to loose low end torque (ie. at the launch) the more free flowing the exhaust. The lack of back pressure causes this. However the gain in upper RPM HP more than makes up for it. And let's face it - with the traction issues we have you can afford to loose a little wheel spin in favor of upper rpm HP.
These are facts - not theories. The reason everybody debates these issues is because everyone's cars, driving style and experiences cause differing opinions. I have done a lot of muffler swapping to get the range I was looking for. Also I'm a fluid and mechanical engineer so I know a little something about air flow.
To answer the question:
Get:
GT - Intake
Header
high flow cat
2.5" Catback exhaust with a free flowing muffler (really makes very little diff what brand)
ST - Idk probably the same stuff but perhaps 2.25" exhaust (just a guess)
Do this and you'll be fine - no where near 150HP though.
This post has been edited by Negative: Feb 10, 2006 - 1:02 PM
These are facts - not theories. The reason everybody debates these issues is because everyone's cars, driving style and experiences cause differing opinions. I have done a lot of muffler swapping to get the range I was looking for. Also I'm a fluid and mechanical engineer so I know a little something about air flow.
To answer the question:
Get:
GT - Intake
Header
high flow cat
2.5" Catback exhaust with a free flowing muffler (really makes very little diff what brand)
ST - Idk probably the same stuff but perhaps 2.25" exhaust (just a guess)
Do this and you'll be fine - no where near 150HP though.
This post has been edited by Negative: Feb 10, 2006 - 1:02 PM
What about adding something like the SAFC2 to that?