Callaway SS Headers??
CF Senior Member
Joined: Feb 2006
Posts: 23,313
Likes: 25
From: Tucson Arizona
The shorties may be CARB certified but you won't get the gain that you'd see with the long tubes. Sorry I don't have the actual numbers to post but....that's my story and I'm sticking to it
Team Owner
Joined: Feb 2001
Posts: 27,236
Likes: 121
From: Short Hills, NJ
Originally Posted by Wayne O
The shorties may be CARB certified but you won't get the gain that you'd see with the long tubes.
If remaining emissions legal is that important (and it is) I would sooner just stick with the stock manifolds and find the power somewhere else.
Racer
Joined: May 2005
Posts: 344
Likes: 0
From: Rancho Santa Margarita CA
Originally Posted by LS1LT1
If remaining emissions legal is that important (and it is) I would sooner just stick with the stock manifolds and find the power somewhere else.
I am sure you will not like this candid feed back espessially coming from yellow Vette owners and perceived yellow vette owners, but you will get over it.
Thread Starter
Pro
Joined: Apr 2006
Posts: 580
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From: New Jersey
Originally Posted by Cookee
Double Ditto.
I am sure you will not like this candid feed back espessially coming from yellow Vette owners and perceived yellow vette owners, but you will get over it.
I am sure you will not like this candid feed back espessially coming from yellow Vette owners and perceived yellow vette owners, but you will get over it.
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Drifting
Joined: Jun 2005
Posts: 1,837
Likes: 4
Most of the test reports and claims I've seen indicate that the long-tube headers are good for about twice the HP gain (25-30) as the short-tube models (10-15), but most if not all of these tests are comparing long-tubes with high-flow cats (or no cats) to short-tube headers with the stock cats. I'm not sure that the difference wouldn't be smaller using the shortys with Random cats.
In addition to the emissions issue and possible codes due to cold cats and O2 sensors there's the matter of stuff hanging out under the car. The cats are so nicely tucking in out of the way where they are!
In addition to the emissions issue and possible codes due to cold cats and O2 sensors there's the matter of stuff hanging out under the car. The cats are so nicely tucking in out of the way where they are!
Team Owner
Joined: Feb 2001
Posts: 27,236
Likes: 121
From: Short Hills, NJ
Originally Posted by Cookee
Double Ditto.
I am sure you will not like this candid feed back espessially coming from yellow Vette owners and perceived yellow vette owners, but you will get over it.
I am sure you will not like this candid feed back espessially coming from yellow Vette owners and perceived yellow vette owners, but you will get over it.
And since you posted that yet ANOTHER yellow Vette owner posted! 
Team Owner
Joined: Feb 2001
Posts: 27,236
Likes: 121
From: Short Hills, NJ
Originally Posted by timd38
Does anyone know if he could use Z06 exhaust manifolds and gain power?
Using the whole Z06 system might be one option though.
Thread Starter
Pro
Joined: Apr 2006
Posts: 580
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From: New Jersey
Originally Posted by Buffy
Most of the test reports and claims I've seen indicate that the long-tube headers are good for about twice the HP gain (25-30) as the short-tube models (10-15), but most if not all of these tests are comparing long-tubes with high-flow cats (or no cats) to short-tube headers with the stock cats. I'm not sure that the difference wouldn't be smaller using the shortys with Random cats.
In addition to the emissions issue and possible codes due to cold cats and O2 sensors there's the matter of stuff hanging out under the car. The cats are so nicely tucking in out of the way where they are!
In addition to the emissions issue and possible codes due to cold cats and O2 sensors there's the matter of stuff hanging out under the car. The cats are so nicely tucking in out of the way where they are!
does anybody happen to know of anyone selling a random cats setup for the stock location? and I guess while we're at it, a x pipe replacement for the stock h pipe.
Le Mans Master
Joined: Sep 2004
Posts: 7,027
Likes: 6
From: Shiloh Ohio
Originally Posted by jsk96z28
does anybody happen to know of anyone selling a random cats setup for the stock location? and I guess while we're at it, a x pipe replacement for the stock h pipe.
Thread Starter
Pro
Joined: Apr 2006
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From: New Jersey
Originally Posted by shurite44
Doing this would also violate the law, so you might as well go with long tube headers. It has been a while since I read it, but I believe the only legal way to replace a cat is if it is damaged.
Le Mans Master
Joined: Sep 2004
Posts: 7,027
Likes: 6
From: Shiloh Ohio
Originally Posted by jsk96z28
Yep, they're broke alright, they don't flow enough.
Just pointing out that shorty's with cats not from the factory would be just as illegal. Unless of course as I pointed out they had to be replaced due to damage.
Drifting
Joined: Jun 2005
Posts: 1,837
Likes: 4
Originally Posted by jsk96z28
Thanks, thats what I am seeing from some other sources, about 10 hp versus 30. But like you said thats with hi flow cats and an x-pipe.
does anybody happen to know of anyone selling a random cats setup for the stock location? and I guess while we're at it, a x pipe replacement for the stock h pipe.
does anybody happen to know of anyone selling a random cats setup for the stock location? and I guess while we're at it, a x pipe replacement for the stock h pipe.
http://www.tbyrnemotorsports.com/C6/c6exhaust.html at the bottom of the page.
They're probably not legal, but it's not like anyone will find out without practically dismantling the car and having another C6 to compare with.
I'm not sure anyone makes an X-pipe that they will guarantee to fit with the stock mufflers, but then if you're spending over 2 grand on headers, cats and x-pipe you might as well get a nice catback anyway.
Thread Starter
Pro
Joined: Apr 2006
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From: New Jersey
Originally Posted by Buffy
Yes, Random makes them - part numbers 702705 (left) and 702706 (right). Forum vendor TByrne sells them - see
http://www.tbyrnemotorsports.com/C6/c6exhaust.html at the bottom of the page.
They're probably not legal, but it's not like anyone will find out without practically dismantling the car and having another C6 to compare with.
I'm not sure anyone makes an X-pipe that they will guarantee to fit with the stock mufflers, but then if you're spending over 2 grand on headers, cats and x-pipe you might as well get a nice catback anyway.
http://www.tbyrnemotorsports.com/C6/c6exhaust.html at the bottom of the page.
They're probably not legal, but it's not like anyone will find out without practically dismantling the car and having another C6 to compare with.
I'm not sure anyone makes an X-pipe that they will guarantee to fit with the stock mufflers, but then if you're spending over 2 grand on headers, cats and x-pipe you might as well get a nice catback anyway.
Well, at least I have a second option now. Thanks everybody!!!
Le Mans Master
Joined: Sep 2004
Posts: 7,027
Likes: 6
From: Shiloh Ohio
Originally Posted by Buffy
They're probably not legal, but it's not like anyone will find out without practically dismantling the car and having another C6 to compare with.
My point is if you are going to the trouble to get headers, and you decide to replace the cats. You may as well go with long tubes, because both options violate the letter of the law. Only way to stay compliant is to use approved shorty headers and keep your stock cats, period.
Now as far as hurting the environment. I bet my LG's high flow cats and corsa cat back would test out clean anyway.
Ok, I am done here. I think maybe I am missing the point or something.
Drifting
Joined: Jun 2005
Posts: 1,837
Likes: 4
Personally, I'm not worried about getting busted for illegal exhaust, and I doubt that there's any significant difference in emissions. I do like the way the factory cats tuck up into the engine compartment, and the pipes are in the tunnel leaving a very clean underside with little to scrape or affect the airflow under the car. That's my main interest in the shortys.
Thread Starter
Pro
Joined: Apr 2006
Posts: 580
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From: New Jersey
Originally Posted by Buffy
Personally, I'm not worried about getting busted for illegal exhaust, and I doubt that there's any significant difference in emissions. I do like the way the factory cats tuck up into the engine compartment, and the pipes are in the tunnel leaving a very clean underside with little to scrape or affect the airflow under the car. That's my main interest in the shortys.
I'll walk before i drive a frog or japanese car. Its BS i cant say J A P like this ***
guess they programmed this board, damn japs
Last edited by jsk96z28; Jul 15, 2006 at 12:17 AM.