cat or no cat
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From: BOOOOYAHH, NY, CPA
Re: cat or no cat (Suck my DX)
If anything go with a SMSP cat because they are free flowing but offer some back pressure. A staight pipe sounds way to raspy and stinks up the cabin of the car....honestly not worth it. I actually have one for sale if u are intrested PM me.
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From: Pasadena, CA
Re: cat or no cat (Mad Money)
dont really care much about the noise...its not my daily driver...are there any performance related drawbacks to it or is it just a noise and smell thing...
people talk about backpressure all the time and no one really seems to make any valid points..if im not mistaken isnt the point of the exhaust to relieve backpressure?
people talk about backpressure all the time and no one really seems to make any valid points..if im not mistaken isnt the point of the exhaust to relieve backpressure?
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From: nj, usa
Re: cat or no cat (Suck my DX)
there was a some test done in sportcompact car i think. either way it was some magazine that tested straight pipe, stock cat and high flow cat on a stock SI. with the high flow cat u only lose 1 whp, so they were saying its not worth the trouble wiht law enforcement to delete the cat.
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From: austin, tx, u.s.
Re: cat or no cat (DJ_NeX)
Basic info here, a properly setup test pipe will increase the overall power under the curve on any even remotely performance oriented car. The only reason I don't say all* cars is because I don't know every thing about any car, muchless every car. Depending on the flow characteristics of your header and the rest of your exhaust it is possible to lose a little tq down low, although I would not expect it. Power in the effective rpm range will increase.
The idea of needing back pressure is a complete_myth. Balancing and improving flow characteristics is what people usually mean when they bring this up, but do so in the wrong fashion. Every race header which makes the most power gets most of it by deleting the cat, yet people still say if you lose the cat you'll "lose backpressure" and your car "will suck" or something along those lines.
The fastest cars in any motorsport would run open header or close to if they could. The smell should also not be noticeable unless stopped with the windows down, with the wind blowing towards the front of your car. People often think they smell fumes resulting from a test pipe, when in fact it is because their tune is now off and they are smelling unburnt fuel, that or they have bad exhaust leaks already present.
To relate the discussion to your 11:1 n/a car specifically, yes it would help it. Your improved flow over stock would yield better gains compared to a stock car. This relationship never ends, as a 350hp n/a vette can gain 25hp from cat deletes, and a 800whp supra can gain 35+Whp.
The idea of needing back pressure is a complete_myth. Balancing and improving flow characteristics is what people usually mean when they bring this up, but do so in the wrong fashion. Every race header which makes the most power gets most of it by deleting the cat, yet people still say if you lose the cat you'll "lose backpressure" and your car "will suck" or something along those lines.
The fastest cars in any motorsport would run open header or close to if they could. The smell should also not be noticeable unless stopped with the windows down, with the wind blowing towards the front of your car. People often think they smell fumes resulting from a test pipe, when in fact it is because their tune is now off and they are smelling unburnt fuel, that or they have bad exhaust leaks already present.
To relate the discussion to your 11:1 n/a car specifically, yes it would help it. Your improved flow over stock would yield better gains compared to a stock car. This relationship never ends, as a 350hp n/a vette can gain 25hp from cat deletes, and a 800whp supra can gain 35+Whp.
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From: Hessian Aggression
Re: cat or no cat (Suck my DX)
if youre telling the truth, and its not street driven, then yea, ge rid of it.
if its daily driven, and you just bullshitted us to avoid flamage from possible semi-tree huggers then just get a hi flow.
i think its choice 2.
if its daily driven, and you just bullshitted us to avoid flamage from possible semi-tree huggers then just get a hi flow.
i think its choice 2.
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From: Pasadena, CA
Re: cat or no cat (xDEFTONESx)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sahtt »</TD></TR><TR><TD CLASS="quote">Basic info here, a properly setup test pipe will increase the overall power under the curve on any even remotely performance oriented car. The only reason I don't say all* cars is because I don't know every thing about any car, muchless every car. Depending on the flow characteristics of your header and the rest of your exhaust it is possible to lose a little tq down low, although I would not expect it. Power in the effective rpm range will increase.
The idea of needing back pressure is a complete_myth. Balancing and improving flow characteristics is what people usually mean when they bring this up, but do so in the wrong fashion. Every race header which makes the most power gets most of it by deleting the cat, yet people still say if you lose the cat you'll "lose backpressure" and your car "will suck" or something along those lines.
The fastest cars in any motorsport would run open header or close to if they could. The smell should also not be noticeable unless stopped with the windows down, with the wind blowing towards the front of your car. People often think they smell fumes resulting from a test pipe, when in fact it is because their tune is now off and they are smelling unburnt fuel, that or they have bad exhaust leaks already present.
To relate the discussion to your 11:1 n/a car specifically, yes it would help it. Your improved flow over stock would yield better gains compared to a stock car. This relationship never ends, as a 350hp n/a vette can gain 25hp from cat deletes, and a 800whp supra can gain 35+Whp. </TD></TR></TABLE>
good info...sorry if i am oblivious but what exactly is a test pipe?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xDEFTONESx »</TD></TR><TR><TD CLASS="quote">if youre telling the truth, and its not street driven, then yea, ge rid of it.
if its daily driven, and you just bullshitted us to avoid flamage from possible semi-tree huggers then just get a hi flow.
i think its choice 2. </TD></TR></TABLE>
well i do drive it on the street sometimes...by sometimes i mean possibly once or twice a month, but for the most part id just like to have it as a track car...my DD is an ss camaro...
"flamage from possible semi-tree huggers"
ROFLMAO
The idea of needing back pressure is a complete_myth. Balancing and improving flow characteristics is what people usually mean when they bring this up, but do so in the wrong fashion. Every race header which makes the most power gets most of it by deleting the cat, yet people still say if you lose the cat you'll "lose backpressure" and your car "will suck" or something along those lines.
The fastest cars in any motorsport would run open header or close to if they could. The smell should also not be noticeable unless stopped with the windows down, with the wind blowing towards the front of your car. People often think they smell fumes resulting from a test pipe, when in fact it is because their tune is now off and they are smelling unburnt fuel, that or they have bad exhaust leaks already present.
To relate the discussion to your 11:1 n/a car specifically, yes it would help it. Your improved flow over stock would yield better gains compared to a stock car. This relationship never ends, as a 350hp n/a vette can gain 25hp from cat deletes, and a 800whp supra can gain 35+Whp. </TD></TR></TABLE>
good info...sorry if i am oblivious but what exactly is a test pipe?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xDEFTONESx »</TD></TR><TR><TD CLASS="quote">if youre telling the truth, and its not street driven, then yea, ge rid of it.
if its daily driven, and you just bullshitted us to avoid flamage from possible semi-tree huggers then just get a hi flow.
i think its choice 2. </TD></TR></TABLE>
well i do drive it on the street sometimes...by sometimes i mean possibly once or twice a month, but for the most part id just like to have it as a track car...my DD is an ss camaro...
"flamage from possible semi-tree huggers"
ROFLMAO
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From: austin, tx, u.s.
Re: cat or no cat (Suck my DX)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Suck my DX »</TD></TR><TR><TD CLASS="quote">
good info...sorry if i am oblivious but what exactly is a test pipe?
well i do drive it on the street sometimes...by sometimes i mean possibly once or twice a month, but for the most part id just like to have it as a track car...my DD is an ss camaro...
"flamage from possible semi-tree huggers"
ROFLMAO</TD></TR></TABLE>
A test pipe is a piece of pipe that replaces your cat. On most race headers, even though headers with the cat deleted are actually known as race headers now-a-days, the header bolts directly to the rest of your catback, or whatever the cat connected to downstreem the exhaust system depending on your setup. The standard test-pipe usually costs $120-100 new. You may want to look into whether the stock heatshield bolts onto it if that is an issue, if you get my drift.
The increased emissions from daily driving a honda with a test pipe are so insignificant it would take hours just to fully explain to you HOW insigificant it really is. There are sportbikes with motors 1-1.4 liters in size that have 0 emissions to deal with. Why? Passenger vehicle emission regulation is political and one of the worst ways to actually lessen pollution, it's the chosen way because we are defenseless against it for the most part. China is well on its way to produce more toxic pollution into the atmosphere this decade alone than the rest of the world combined, over the LAST 20-30 YEARS.
good info...sorry if i am oblivious but what exactly is a test pipe?
well i do drive it on the street sometimes...by sometimes i mean possibly once or twice a month, but for the most part id just like to have it as a track car...my DD is an ss camaro...
"flamage from possible semi-tree huggers"
ROFLMAO</TD></TR></TABLE>
A test pipe is a piece of pipe that replaces your cat. On most race headers, even though headers with the cat deleted are actually known as race headers now-a-days, the header bolts directly to the rest of your catback, or whatever the cat connected to downstreem the exhaust system depending on your setup. The standard test-pipe usually costs $120-100 new. You may want to look into whether the stock heatshield bolts onto it if that is an issue, if you get my drift.
The increased emissions from daily driving a honda with a test pipe are so insignificant it would take hours just to fully explain to you HOW insigificant it really is. There are sportbikes with motors 1-1.4 liters in size that have 0 emissions to deal with. Why? Passenger vehicle emission regulation is political and one of the worst ways to actually lessen pollution, it's the chosen way because we are defenseless against it for the most part. China is well on its way to produce more toxic pollution into the atmosphere this decade alone than the rest of the world combined, over the LAST 20-30 YEARS.
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From: Hessian Aggression
Re: cat or no cat (sahtt)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sahtt »</TD></TR><TR><TD CLASS="quote">
A test pipe is a piece of pipe that replaces your cat. On most race headers, even though headers with the cat deleted are actually known as race headers now-a-days, the header bolts directly to the rest of your catback, or whatever the cat connected to downstreem the exhaust system depending on your setup. The standard test-pipe usually costs $120-100 new. You may want to look into whether the stock heatshield bolts onto it if that is an issue, if you get my drift.
The increased emissions from daily driving a honda with a test pipe are so insignificant it would take hours just to fully explain to you HOW insigificant it really is. There are sportbikes with motors 1-1.4 liters in size that have 0 emissions to deal with. Why? Passenger vehicle emission regulation is political and one of the worst ways to actually lessen pollution, it's the chosen way because we are defenseless against it for the most part. China is well on its way to produce more toxic pollution into the atmosphere this decade alone than the rest of the world combined, over the LAST 20-30 YEARS.</TD></TR></TABLE>
what he is saying is, a catless honda in a garage, running with the door closed, still wouldnt kill you. kinda. ok not really, but yea seriously.
A test pipe is a piece of pipe that replaces your cat. On most race headers, even though headers with the cat deleted are actually known as race headers now-a-days, the header bolts directly to the rest of your catback, or whatever the cat connected to downstreem the exhaust system depending on your setup. The standard test-pipe usually costs $120-100 new. You may want to look into whether the stock heatshield bolts onto it if that is an issue, if you get my drift.
The increased emissions from daily driving a honda with a test pipe are so insignificant it would take hours just to fully explain to you HOW insigificant it really is. There are sportbikes with motors 1-1.4 liters in size that have 0 emissions to deal with. Why? Passenger vehicle emission regulation is political and one of the worst ways to actually lessen pollution, it's the chosen way because we are defenseless against it for the most part. China is well on its way to produce more toxic pollution into the atmosphere this decade alone than the rest of the world combined, over the LAST 20-30 YEARS.</TD></TR></TABLE>
what he is saying is, a catless honda in a garage, running with the door closed, still wouldnt kill you. kinda. ok not really, but yea seriously.
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From: Pasadena, CA
Re: cat or no cat (sahtt)
i see...but i am still kind of confused as to what exactly the difference is between a test pipe and an ordinary piece of exhaust tubing?
i will run open header at the track,but for times where i do decide to take it on the street the sound is simply unbearable....ill get pulled over for sure...ill be going 15 mph and it sounds like a war is going on.
i will run open header at the track,but for times where i do decide to take it on the street the sound is simply unbearable....ill get pulled over for sure...ill be going 15 mph and it sounds like a war is going on.
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Re: cat or no cat (Suck my DX)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Suck my DX »</TD></TR><TR><TD CLASS="quote">i see...but i am still kind of confused as to what exactly the difference is between a test pipe and an ordinary piece of exhaust tubing?
</TD></TR></TABLE>
None really. The test pipe replaces the cat, is all. Hell, you could make your own with a piece of pipe, flanges, and a welder.
</TD></TR></TABLE>
None really. The test pipe replaces the cat, is all. Hell, you could make your own with a piece of pipe, flanges, and a welder.
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From: Fairfax, Virginia, USA
Re: cat or no cat (Suck my DX)
There isn't any difference. Is the SEARCH link down? You could easily find all of this out for yourself.
Test pipes = off road use only. No matter if you want to hug trees or not, the fact still remains that it is a FEDERAL law to have a converter (and ALL factory emissions equipment) on your car anytime it is driven on the street. Local emissions testing doesn't have jack to do with it. Fines can be in excess of $2000.
Will you "loose" torque, no, but you won't have the same torque curve either. You will sacrifice some low to mid range power/torque for a minimal gain in the upper RPM.
As far as smell goes, the last time I checked you can't smell all of the crap that comes out of your tail pipe. Emissions are greatly increased without a converter, period. Is it as much as a 69' Mustang or China's factories? No, but that isn't the point. Track car - do what ever you want, when it's on the street run all the required equipment. The difference between a high flowing converter and a "test pipe" is minimal. So why not run the high flow converter, avoid the fines, and go hug an f'ing tree.
I have said it before and I will say it again: For all the ****-for-brains (converter-less street "tuners") out there that believe they are driving a zero emissions Honda, please do the rest of us a favor and route the exhaust into the cabin of your car so we can see Darwinism at work.
EDIT - lol, I just noticed black_EM1 has a Darwin reference in his sig.
Test pipes = off road use only. No matter if you want to hug trees or not, the fact still remains that it is a FEDERAL law to have a converter (and ALL factory emissions equipment) on your car anytime it is driven on the street. Local emissions testing doesn't have jack to do with it. Fines can be in excess of $2000.
Will you "loose" torque, no, but you won't have the same torque curve either. You will sacrifice some low to mid range power/torque for a minimal gain in the upper RPM.
As far as smell goes, the last time I checked you can't smell all of the crap that comes out of your tail pipe. Emissions are greatly increased without a converter, period. Is it as much as a 69' Mustang or China's factories? No, but that isn't the point. Track car - do what ever you want, when it's on the street run all the required equipment. The difference between a high flowing converter and a "test pipe" is minimal. So why not run the high flow converter, avoid the fines, and go hug an f'ing tree.
I have said it before and I will say it again: For all the ****-for-brains (converter-less street "tuners") out there that believe they are driving a zero emissions Honda, please do the rest of us a favor and route the exhaust into the cabin of your car so we can see Darwinism at work.
EDIT - lol, I just noticed black_EM1 has a Darwin reference in his sig.
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Re: cat or no cat (Suck my DX)
if you take out the cat completely, it's gonna sound like crap, just buy a high flow cat. Comptech has a really nice one, but its kinda pricey, but magnaflow has one thats cheap if you want to go that route
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Re: cat or no cat (Wraith_G2IC)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Wraith_G2IC »</TD></TR><TR><TD CLASS="quote">
EDIT - lol, I just noticed black_EM1 has a Darwin reference in his sig.</TD></TR></TABLE>
I'm a fan of his theories, yes.
EDIT - lol, I just noticed black_EM1 has a Darwin reference in his sig.</TD></TR></TABLE>
I'm a fan of his theories, yes.
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