[Z06] LT Headers- Reasonable HP Expectations?
Drifting
Joined: Oct 2009
Posts: 1,438
Likes: 4
From: Always in my lane.
I repeat again...Mr. Officer.....ts not the cops that checks visually for the cats, seeing in would be kinda tough for anyone to check for cats under most Corvettes...(stock height and on lowered bolts)..I say again Mr. Officer....ITS THE EMISSION STATIONS...it is required to visually inspect the undercarriage of every car whether its Corvette, Malibu, Geo, Escallade, whatever. Also Mr. Officer the emission stations are wired for close circuit video in addition to managing the property , also to make sure the workers are doing their jobs. So of course they are going to visually inspect (with mirrors) the underside of the cars. (Also MAJOR KUDOS to England Green to show that you can have great power WITH CATS!!!!)
Last edited by DARRYLZO6; Nov 3, 2009 at 04:05 PM.
Thread Starter
Burning Brakes
Joined: Aug 2007
Posts: 831
Likes: 2
From: Houston Texas
Glad to see my innocent little OP started such spirited discussion ! Not quite certain how or why we digressed to debating breaking the law
My view on the cat issue is very simple - the law (federal) of these United States of America to my best interpretation required my 2002 Z06 to have catalytic converters.
Perhaps removing them might result in a negligible power gain and more decibels. However - for me I like the KEEP IT SIMPLE KEEP IT STUPID rule which in this case means just following the law.
One thing I think we all can agree on is these C5 Z06's are great cars
For me - the Z06 is an American sports car that puts a grin on my face when I drive it and puts to shame yuppies driving foreign sports cars ( no names- but sound like BMW and Porsche).
My view on the cat issue is very simple - the law (federal) of these United States of America to my best interpretation required my 2002 Z06 to have catalytic converters.
Perhaps removing them might result in a negligible power gain and more decibels. However - for me I like the KEEP IT SIMPLE KEEP IT STUPID rule which in this case means just following the law.
One thing I think we all can agree on is these C5 Z06's are great cars
For me - the Z06 is an American sports car that puts a grin on my face when I drive it and puts to shame yuppies driving foreign sports cars ( no names- but sound like BMW and Porsche).
Drifting
Joined: Oct 2009
Posts: 1,438
Likes: 4
From: Always in my lane.
Well said!! May i say further, I would rather have the cats on in addition to the headers, and running through the stock TI exhaust. The decibel level is a lot lower than running the alternative. Im not always alone in the car, and it would turn me off if I had to YELL to speak to my woman or anybody else. im not putting down anyone who wants to run without headers, to each his own. But I hate when people treat you as if your way is totally the wrong way. Also its also a fact that running without the cats , the extra hp you would pick up isnt worth the trouble.
Pro
Joined: Dec 2005
Posts: 682
Likes: 7
From: West Chester Pennsylvania
Fran's guys at Race Proven Motorsports squeezed 385.5 hp and 374 ft/lb of torque at the rear wheels on the dyno this past Wednesday. The car has a Vortex CAI, LG Streets (no cats) and BB Bullets. Sounds insane.
Fran has one hell of a shop. Highly recommended.
Fran has one hell of a shop. Highly recommended.
Le Mans Master
Joined: Dec 2001
Posts: 7,788
Likes: 6
From: Winchester TN
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St. Jude Donor '03-'04-'05-'06-'07-'11
Well said!! May i say further, I would rather have the cats on in addition to the headers, and running through the stock TI exhaust. The decibel level is a lot lower than running the alternative. Im not always alone in the car, and it would turn me off if I had to YELL to speak to my woman or anybody else. im not putting down anyone who wants to run without headers, to each his own. But I hate when people treat you as if your way is totally the wrong way. Also its also a fact that running without the cats , the extra hp you would pick up isnt worth the trouble.
Hi DARRYLZ06 -
I have been on this board for many years and these threads almost always degrade into a "environmentalist gotta run cats" vs "no cats no way" fractured debate.
The fact is, I bought my Z06 because it was the pinnacle of Corvette performance technology. I bought my LG Pros because they were the pinnacle (I know - arguably) of header performance technology for my C5. I went without cats because I could save $500 (at the time) AND get a few extra ponies.
Driving a two-seat sports car with a high output V8 engine, and then insisting that running with cats is somehow more environmentally sound is like throwing a deck chair off of the Titanic; not gonna make a bit of difference in the big picture.
But if it makes people feel better, I am behind them 100%.
best regards -
mqqn
Burning Brakes
Joined: May 2000
Posts: 801
Likes: 1
From: Tampa, FL USA
Not to pour any fuel an a fire, but the law says not to alter a catalytic converter unless it has failed.
If you swap a good cat for a hi-flow, you are breaking the law.
I return you now to our regularly scheduled finger pointing and commentary on what's legal and what actually isn't..
At the bell, the pots and kettles can continue the match.
If you swap a good cat for a hi-flow, you are breaking the law.
I return you now to our regularly scheduled finger pointing and commentary on what's legal and what actually isn't..
At the bell, the pots and kettles can continue the match.
Last edited by 1fastdog; Nov 8, 2009 at 02:30 PM.
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Burning Brakes
Joined: Aug 2007
Posts: 880
Likes: 0
From: Bath PA
Not to pour any fuel an a fire, but the law says not to alter a catalytic converter unless it has failed.
If you swap a good cat for a hi-flow, you are breaking the law.
I return you now to our regularly scheduled finger pointing and commentary on what's legal and what actually isn't..
At the bell, the pots and kettles can continue the match.
If you swap a good cat for a hi-flow, you are breaking the law.
I return you now to our regularly scheduled finger pointing and commentary on what's legal and what actually isn't..
At the bell, the pots and kettles can continue the match.
Rabble rouser! Most of us break the law every time we drive our cars anyway.
For me, and it sounds like some others, it's about being able to pass inspection and not giving "mr. officer" anything else to hassle us about when he stops us "to look at the car". I've lived in 3 different states since I've put my headers on and every one of them does things differently from no inspection at all to sticking a mirror under the car and plugging in to OBD, to having an official inspection station put your car on a lift and look at everything. It's nice to know that I don't have to worry regardless.
Burning Brakes
Joined: May 2000
Posts: 801
Likes: 1
From: Tampa, FL USA
Touche' Rabble rouser!
Most of us break the law every time we drive our cars anyway.
For me, and it sounds like some others, it's about being able to pass inspection and not giving "mr. officer" anything else to hassle us about when he stops us "to look at the car". I've lived in 3 different states since I've put my headers on and every one of them does things differently from no inspection at all to sticking a mirror under the car and plugging in to OBD, to having an official inspection station put your car on a lift and look at everything. It's nice to know that I don't have to worry regardless.
Rabble rouser! Most of us break the law every time we drive our cars anyway.
For me, and it sounds like some others, it's about being able to pass inspection and not giving "mr. officer" anything else to hassle us about when he stops us "to look at the car". I've lived in 3 different states since I've put my headers on and every one of them does things differently from no inspection at all to sticking a mirror under the car and plugging in to OBD, to having an official inspection station put your car on a lift and look at everything. It's nice to know that I don't have to worry regardless.
As for any local officer plugging into an OBDII port, that's sorta strange.
Kind of an issue regarding probable cause, unless it's an inspection station where everyone is subjected to equal treatment in the course of regular business.
I'm a believer in freedom and sane fun. No inference toward calling anyone out.
Safe, sane, prudent. Works for me!
Drifting
Joined: Oct 2009
Posts: 1,438
Likes: 4
From: Always in my lane.
I think its safe to say, most of us want to stay lawful, and at the same time dont want to give anymore reasons to be hasseled. There are a lot of C5Z owners who are making great power WITH CATS, and also have loud exhausts WITH CATS.
Thread Starter
Burning Brakes
Joined: Aug 2007
Posts: 831
Likes: 2
From: Houston Texas
GUYS- Kindly re-read my original post .
Appreciate everyone's input -but the intention was to solicit realistic feedback based on staying within the law.
The tangent the discussion has taken has not added any value to my original inquiry.
IMHO - it's plain silly to break the law , especially for negligible gains in power. Guess it explains why people rob stores for a few dollars........
Appreciate everyone's input -but the intention was to solicit realistic feedback based on staying within the law.
The tangent the discussion has taken has not added any value to my original inquiry.
IMHO - it's plain silly to break the law , especially for negligible gains in power. Guess it explains why people rob stores for a few dollars........
Le Mans Master
Joined: Dec 2007
Posts: 8,375
Likes: 97
From: Somewhere in the Mid 9's TX
IMHO - it's plain silly to break the law , especially for negligible gains in power. Guess it explains why people rob stores for a few dollars........
I, did, decide to comment further. Since I do own a 2 door honda civic,(Eco friendly)
and my work truck, both which are my primary cars, I find many post here to comical, at the very least. Please Sir, do not impose our emmisions laws on us. So, as you stated, to something of the effect....
Why not set a good example for the younger folks by staying within the law.
Regardless- the cats are there to reduce the pollution my kids are going to have to deal for years to come. I'm sticking with them
http://www.ls1tech.com/forums/texas-...12th-13th.html
Last edited by winters97gt; Nov 9, 2009 at 12:42 PM.
Advanced
Joined: Dec 2007
Posts: 81
Likes: 1
From: Kalifornia
LT Headers- Reasonable HP Expectations?
I am in the process of buying some ARH 1 7/8" headers
I want to add headers in order to Shed some weight as well
LG motorsports told me that I would save 20lbs over the stock iron manifolds and H-pipe
The thing I don't like about headers is the additional heat added to the engine bay Thus I am going to have the jethot coated, Buy a new set of manifold gaskets, Kool socks, and insulate my clutch line
Then the car needs a tune, Which all translates into Bookooo$$$$$ for 15-20Hp Anybody that can hook me up on a ***Deal ***as far as having them JetHot coated it would be greatly appreciated
Thanks, To All Bon
I want to add headers in order to Shed some weight as well
LG motorsports told me that I would save 20lbs over the stock iron manifolds and H-pipe
The thing I don't like about headers is the additional heat added to the engine bay Thus I am going to have the jethot coated, Buy a new set of manifold gaskets, Kool socks, and insulate my clutch line
Then the car needs a tune, Which all translates into Bookooo$$$$$ for 15-20Hp Anybody that can hook me up on a ***Deal ***as far as having them JetHot coated it would be greatly appreciated
Thanks, To All Bon
Thread Starter
Burning Brakes
Joined: Aug 2007
Posts: 831
Likes: 2
From: Houston Texas
With all respect, I disagree with you, as with your other responses.
I, did, decide to comment further. Since I do own a 2 door honda civic,(Eco friendly) and my work truck, both which are my primary cars, I find many post here to comical, at the very least. Please Sir, do not impose our emmisions laws on us. So, as you stated, to something of the effect....
By your example, if you pass the speed limit by 1mph, you are breaking the law. I would imagine that you have knowingly broke the the law. Furthermore I am not employed by our local, state, or federal government and I am not a younger folk. Who are you talking about? I didn't by a Z06, that I race almost weekly, to set a standard or so some sort of maturity that you imply to anybody. I bought it for what it was meant to do, race.
http://www.ls1tech.com/forums/texas-...12th-13th.html
I, did, decide to comment further. Since I do own a 2 door honda civic,(Eco friendly)
and my work truck, both which are my primary cars, I find many post here to comical, at the very least. Please Sir, do not impose our emmisions laws on us. So, as you stated, to something of the effect....By your example, if you pass the speed limit by 1mph, you are breaking the law. I would imagine that you have knowingly broke the the law. Furthermore I am not employed by our local, state, or federal government and I am not a younger folk. Who are you talking about? I didn't by a Z06, that I race almost weekly, to set a standard or so some sort of maturity that you imply to anybody. I bought it for what it was meant to do, race.
http://www.ls1tech.com/forums/texas-...12th-13th.html
I just was trying to keep my OP here on track. Please re-read it. I have no idea why my op got hijacked to a discussion about running LT's sans cats.
Last edited by NatB; Nov 9, 2009 at 06:31 PM.
Race Director
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From: Now in God's Country, the Big Sky, Montana!
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St. Jude Donor '06-'07-'08-'09-'10-'11-'12
To answer your question, yes, you can get away with not having cats unless you get visually inspected. We do not recommend running without cats nor do we install them without cats unless it is a track car.
