swaping out the cat for a straight pipe?
09-27-2006, 03:27 PM
#42
Originally Posted by lookinco
i am not sure in the N/A application, but for those who are supercharged, I believe the straight pipe should yield some good power.
https://acurazine.com/forums/car-parts-sale-361/my-car-still-sale-13-000-obo-145094/
04-08-2007, 05:35 PM
#46
Port & Polish Everything
Originally Posted by encrypted03
The computer would probably have a shit fit with the readings it'll be getting, similar to what I had on the Altima w/ no cats 
Maybe an 02 simulator would work, or spacing the sensors a bit farther down the exhaust path.
Maybe an 02 simulator would work, or spacing the sensors a bit farther down the exhaust path.
04-16-2007, 09:44 PM
#50
Why do you guys do this... ?
Not that I'm a tree hugger, but the cats serve a purpose, and it's environmentally irresponsible of you knuckleheads to remove them to gain a few meager additional HP.
The pro-cats have been shown to add 20HP or so, removing the 3rd cat can't offer but a few HP. The detriment to the environment you live in far exceeds the unoticeable gains you'll receive.
Not that I'm a tree hugger, but the cats serve a purpose, and it's environmentally irresponsible of you knuckleheads to remove them to gain a few meager additional HP.
The pro-cats have been shown to add 20HP or so, removing the 3rd cat can't offer but a few HP. The detriment to the environment you live in far exceeds the unoticeable gains you'll receive.
04-17-2007, 10:46 AM
#51
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Originally Posted by Kennedy
Why do you guys do this... ?
Not that I'm a tree hugger, but the cats serve a purpose, and it's environmentally irresponsible of you knuckleheads to remove them to gain a few meager additional HP.
The pro-cats have been shown to add 20HP or so, removing the 3rd cat can't offer but a few HP. The detriment to the environment you live in far exceeds the unoticeable gains you'll receive.
Not that I'm a tree hugger, but the cats serve a purpose, and it's environmentally irresponsible of you knuckleheads to remove them to gain a few meager additional HP.
The pro-cats have been shown to add 20HP or so, removing the 3rd cat can't offer but a few HP. The detriment to the environment you live in far exceeds the unoticeable gains you'll receive.
04-17-2007, 02:30 PM
#52
Originally Posted by STANGMMX
Your attitude is exactly what I expect from a 20YO with more money than sense.
It's completely stupid to remove the 3rd cat, reduce performance, only to, in the end be able to say, "heh, I'm running a test pipe"... badass.
I'm impressed with your eagerness to mod things without knowing the impact of the mod, or without any consideration of any other factors such as environmental... Have fun in your smog machine you irresponsible
I wonder why the mods allow discussion of these types of mods, which are FEDERAL crimes if used on the street, but disallow discussion of "ways to disable the seatbelt nag", which is only a non-moving traffic violation in most states.
Hmmm...
04-17-2007, 03:25 PM
#53
Come on you guys...its a public forum! Of course there are those that are NOT going to agree with you. No reason to go waving the ghey flag at each other now! I call an unnecessary gheyness penalty! Five minutes in the box with a pair of pink fuzzy slippers on!
04-17-2007, 05:18 PM
#54
One on the right for me
Originally Posted by Kennedy
Right...
Your attitude is exactly what I expect from a 20YO with more money than sense.
It's completely stupid to remove the 3rd cat, reduce performance, only to, in the end be able to say, "heh, I'm running a test pipe"... badass.
I'm impressed with your eagerness to mod things without knowing the impact of the mod, or without any consideration of any other factors such as environmental... Have fun in your smog machine you irresponsible
I wonder why the mods allow discussion of these types of mods, which are FEDERAL crimes if used on the street, but disallow discussion of "ways to disable the seatbelt nag", which is only a non-moving traffic violation in most states.
Hmmm...
Your attitude is exactly what I expect from a 20YO with more money than sense.
It's completely stupid to remove the 3rd cat, reduce performance, only to, in the end be able to say, "heh, I'm running a test pipe"... badass.
I'm impressed with your eagerness to mod things without knowing the impact of the mod, or without any consideration of any other factors such as environmental... Have fun in your smog machine you irresponsible
I wonder why the mods allow discussion of these types of mods, which are FEDERAL crimes if used on the street, but disallow discussion of "ways to disable the seatbelt nag", which is only a non-moving traffic violation in most states.
Hmmm...
Well put.
04-17-2007, 05:23 PM
#55
Senior Moderator
Regions Leader
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Originally Posted by Kennedy
I wonder why the mods allow discussion of these types of mods, which are FEDERAL crimes if used on the street, but disallow discussion of "ways to disable the seatbelt nag", which is only a non-moving traffic violation in most states.
Hmmm...
Hmmm...
we do it by choice, we could allow discussions about seat belts but Ron and I dont like it
AND......here you go again questioning the admin.....hmmmm
04-17-2007, 05:33 PM
#56
Suzuka Master
there is nothing wrong with questioning authority............especially when it makes sense
04-17-2007, 05:47 PM
#57
Originally Posted by trancemission
we do it by choice, we could allow discussions about seat belts but Ron and I dont like it
AND......here you go again questioning the admin.....hmmmm
AND......here you go again questioning the admin.....hmmmm
Not so much questioning the admins... questioning the culture...
and perhaps suggesting to all admins that allowing discussions of modifications that are Federally mandated might warrant a bit of moderator oversight and attention.
With all the attention on the environment these days, I think that's a lot of liability for you guys to absorb if folks are doing these mods based on posts here...
just a suggestion.
and i still think it's a dumb, environmentally irresponsible, and useless mod which will yield little to no gains.
04-17-2007, 05:59 PM
#58
Senior Moderator
Regions Leader
Regions Leader
Originally Posted by Kennedy
With all the attention on the environment these days, I think that's a lot of liability for you guys to absorb if folks are doing these mods based on posts here...
If he wants to street race and not wear his seatbelt, then they are doing it by choice. Not by me telling them too...
So get used to people doing stupid shit on this site....
04-18-2007, 01:02 AM
#59
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just answer the question. what kind of gain are we talking about? i don't even want to do the mod if it doesn't pass inspection, i just want to know just for the sake of knowing.
04-18-2007, 08:26 AM
#61
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Originally Posted by Kennedy
Why do you guys do this... ?
Not that I'm a tree hugger, but the cats serve a purpose, and it's environmentally irresponsible of you knuckleheads to remove them to gain a few meager additional HP.
The pro-cats have been shown to add 20HP or so, removing the 3rd cat can't offer but a few HP. The detriment to the environment you live in far exceeds the unnoticeable gains you'll receive.
Not that I'm a tree hugger, but the cats serve a purpose, and it's environmentally irresponsible of you knuckleheads to remove them to gain a few meager additional HP.
The pro-cats have been shown to add 20HP or so, removing the 3rd cat can't offer but a few HP. The detriment to the environment you live in far exceeds the unnoticeable gains you'll receive.
Maybe I am wrong, but if replacing the three OEM cats with three "Race" cats yeilds 20 FWHP, wouldn't removing one of those to replace it with a straight pipe yield even more gains than "a few meager additional HP"?
I dont know, Many people I know have done this to the S2000 and seen noticeable gains, and on top of that, it would yield a different exhaust note as well, which a lot of people are looking for now, especially since Comptech is gone and there is no other exhaust at the moment.
As for the environmental part about it, I'm sorry, but removing 1 cat out of 3 is not going to cause any more harm. The third cat has no 02 sensor after it, so it is not even being monitored, causing me to believe that it's functions are negligible at best. I think the main reason for the 3rd cat is just noise reduction, and Honda/Acuras never ending pursuit of ULEV vehicles. With that being said, and the fact that the car is ULEV, maybe removing the cat will just make it LEV?
Just my
so take it for what it's worth.....
04-18-2007, 05:38 PM
#63
Three Wheelin'
[QUOTE= I think the main reason for the 3rd cat is just noise reduction, and Honda/Acuras never ending pursuit of ULEV vehicles. With that being said, and the fact that the car is ULEV, maybe removing the cat will just make it LEV?
Just my so take it for what it's worth.....[/QUOTE]
Not saying its bad; but in many years to come i predict Honda will have developed SMULEV (Super_Mega_Ultra_Low_Emission_Vehicle).
Just my
so take it for what it's worth.....[/QUOTE]Not saying its bad; but in many years to come i predict Honda will have developed SMULEV (Super_Mega_Ultra_Low_Emission_Vehicle).
04-18-2007, 05:46 PM
#64
Three Wheelin'
Originally Posted by johnny--2k
I think the main reason for the 3rd cat is just noise reduction, and Honda/Acuras never ending pursuit of ULEV vehicles. With that being said, and the fact that the car is ULEV, maybe removing the cat will just make it LEV?
Just my so take it for what it's worth.....
Just my
so take it for what it's worth.....
04-18-2007, 08:39 PM
#65
Originally Posted by HQTL6SPD
Not saying its bad; but in many years from now i predict Honda will have developed SMULEV (Super_Mega_Ultra_Low_Emission_Vehicle).
05-13-2007, 05:29 AM
#68
2005 Acura TL w/ Navi
well, wouldnt removing the 3rd cat free up the movement of air thru the exhaust and be less restrictive which would then be increasing hp? what about removing 3rd cat, replacing resonator w/ dynomax and deleting mid-muffler? any gains?
05-15-2007, 12:08 AM
#70
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I replaced my 3rd cat with the Megan Racing piece. I cant comment on the other units, but I will say that the Megan racing test pipe was of very good quality. You wont really hear a difference in sound either, because the Megan Racing pipe has the components of a resonator. As far as fitament goes, it appears to be slightly shorter than the stock cat, but bolted up with very little trouble. Keep in mind, I own a Accord... but I already have confirmed that the TL j-pipe is exactly the same length.
05-15-2007, 12:30 AM
#72
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I actually went to Megan Racing's facility since it is only 15min away from my house. I am positive you can find one on EBAY. The piping is 2.5" inner diameter, but once again I am stuck at work so I will have to double check once i get home. When I was talking to the guys over at Megan, they said they havent updated the website in a while... They also said that there is an exhaust manifold for the 03-05 Accord V6 in development.
05-15-2007, 12:45 AM
#73
ok thanks for the info on the test pipe, I will look harder now knowing that it's out there haha!
as for the exhaust manifold for our cars, forget about it, there is no separate manifold, it is one piece with the engine. the cats bolt up directly to the engine, again an emission feature!
after you installed the Megan did you feel any difference in performance, sound?
as for the exhaust manifold for our cars, forget about it, there is no separate manifold, it is one piece with the engine. the cats bolt up directly to the engine, again an emission feature!
after you installed the Megan did you feel any difference in performance, sound?
05-15-2007, 01:00 AM
#74
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Well what I meant was an exhaust solution like the "headers" OBX makes for the Accord V6... basically replacing the piping from the engine to the flex pipe. Of course, doing so would throw emission compliance out the window... but its been dyno proven to have some serious gains on the Accord V6.
As for performance gains... It "felt" better. But take from it what you will, I will never know without any dyno proof. Although on member on .net said he saw 8whp from it. Barely any noticeable difference in sound too, it acts as a resonator.
As for performance gains... It "felt" better. But take from it what you will, I will never know without any dyno proof. Although on member on .net said he saw 8whp from it. Barely any noticeable difference in sound too, it acts as a resonator.
05-15-2007, 01:18 AM
#75
Originally Posted by rjricenbeans
Well what I meant was an exhaust solution like the "headers" OBX makes for the Accord V6... basically replacing the piping from the engine to the flex pipe. Of course, doing so would throw emission compliance out the window... but its been dyno proven to have some serious gains on the Accord V6.
As for performance gains... It "felt" better. But take from it what you will, I will never know without any dyno proof. Although on member on .net said he saw 8whp from it. Barely any noticeable difference in sound too, it acts as a resonator.
As for performance gains... It "felt" better. But take from it what you will, I will never know without any dyno proof. Although on member on .net said he saw 8whp from it. Barely any noticeable difference in sound too, it acts as a resonator.
Check on Honda research racing TL they went catless back then with great results , gained good power, but it was a strictly racing set up and a one off w/ prototype racing headers. I don't believe this solution would be street-friendly!
05-15-2007, 12:01 PM
#76
2005 Acura TL w/ Navi
im a little confused..some say its reduced performance some say it gained..which is it lol? with 3rd cat replaced, would increase or decrease power? currently im running a stage 3 exhaust (dynomax resonator and mid-muffler delete) would the 3rd cat removed,would there be abny increase in power at all and by how much? if its not by much im probably going to leave it alone
05-15-2007, 02:46 PM
#79
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No, you will not be able to pass inspection with that 3rd cat removed... this, in part, helps with the ultra low emissions rating of the car... removing it will negate that. Its a straight bolt on, so swapping it out in time for inspection is no trouble at all. There are no sensors inside it at all and nothing will be affected. Keep in mind that the stock cat is already better higher flowing than the 2 pre-cats, so gains will be minimal. Every little bit helps though.