Thanks. The Corsa system is cat-back, of course, with its own h-pipe. I take it your headers can only be used with the random flow cats, and that this makes it longer than the front part of the stock exhaust? So something (the h-pipe?) needs to be shortened? Appreciate your help. I was going to call about these headers today, but need to know they will work.

 

Hello
I took my almost totally stock car to LG's to get a little more hp's and a little more rumble. We dynoed the car before and after. The baseline dyno number were done on my C5 auto with the only mod I have had was a Vortex Ram Air.

-------------------LG LT Headers,
------------------X-pipe, Race Pipes
----------Stock-----Borla Stinger
RPM--POWER-----POWER------DIFF.
4200---241.6-----------265.3---------23.7
4300---246.2-----------273.3---------27.1
4400---252.7-----------275.8---------23.1
4500---267.5-----------288.5---------21
4600---268.1-----------291.8---------23.7
4700---272.8-----------298.6---------25.8
4800---278.4-----------303.2---------24.8
4900---286.6-----------309.1---------22.5
5000---290.6-----------310.6---------20
5100---293.9-----------314.5---------20.6
5200---287.5-----------315.3---------27.8
5300---297.2-----------318.4---------21.2
5400---296.7-----------320.1---------23.4
5500---297.8-----------317.3---------19.5
5600---298.2-----------316.4---------18.2
5700---295.5-----------317-----------21.5
5800---294.2-----------312.6---------18.4
5900---294.1-----------309.9---------15.8
6000---291.2-----------307.9---------16.7
6100---290-------------303.7---------13.7

PEAK-298.2----------320.1---------21.9

-----------------------LG's LT Headers
----------------------X-pipe, Race Pipes
----------Stock-------Borla Stinger
RPM—TORQUE----TORQUE----DIFF.
4200---302.1-----------331.7---------29.6
4300---300.7-----------333.9---------33.2
4400---301.7-----------329.3---------27.6
4500---312.2-----------336.7---------24.5
4600---306.1-----------333.2---------27.1
4700---304.8-----------333.6---------28.8
4800---304.6-----------331.8---------27.2
4900---307.2-----------331.3---------24.1
5000---305.3-----------326.3---------21
5100---302.6-----------323.9---------21.3
5200---290.4-----------318.4---------28
5300---294.5-----------315.6---------21.1
5400---288.6-----------311.3---------22.7
5500---284.4-----------303-----------18.6
5600---279.7-----------296.7---------17
5700---272.3-----------292.1---------19.8
5800---266.4-----------283.1---------16.7
5900---261.8-----------275.9---------14.1
6000---254.9-----------269.5---------14.6
6100---249.7-----------261.4---------11.7

PEAK-312.2-----------336.7---------24.5


The sound is great, a little noise at around 2000 rpm, but a great idle and awsome sound at full throttle.

Thanks

 

Godspeed/Lou........Is it true that TOO large of an exhaust system can cause a loss of power?? Not saying your headers are this way :nono: .....obviously someone designed them well.:D But, you say your headers have so much more size all the way through than others. What is the limit to when the gains continue and the results start going downwards?? :cheers: :D :cheers:

 

Vicous - you refer to "race pipes," X-pipe and Corsa exhaust. I'm still trying to figure out if this will fit on my Corsa Ti exhaust. What are "race pipes?" Did you eliminate the cats?

 

Howdy Lou and Godspeed.

Lou, I just wanted to compliment you on the headers. I saw the pic from the Vettefest with the headers bolted onto a motor. They really are a piece of artwork. Too bad they are under the car.

Obviously, your headers make even more power on motors that can really gain from it. I had a question. Are there any reports from users of your headers on total gains with a stock '02 Z06.

I understand that until you mod the car, you may not see significant gains since there is little overlap on the stock '02 LS6 Camshaft, and the scavenging effect of the headers may be minimized.

I understand that once you upgrade to a H/C package, that you will see signifcant gains with these headers over other headers.

I am simply trying to figure out the best order in which to do mods. I am completely sold on your headers. I just didn't want to get them before I did a H/C if I was only going to gain 5RWHP on the stock motor, as opposed to doing them when I do a H/C and really pick up some HP.

Thanks...

 

Generally, on a stock car you'll get 20-25rwhp with headers. Once you do heads/cam on an LS1, the stock manifolds REALLY become the bottleneck. I'll be doing headers soon once I figure out which I can afford and at 392rwhp through 100% stock exhaust I have a feeling I'll be gaining a bit more than the 20-25rwhp numbers. :D I'd guess 30-35rwhp gain without cats.

 

Lou please post on this thread and let us know if your headers will work with the Ti exhaust!!!!!I can't get rid of this one!!!!I tried out 5 exhaust systems and this is the one I'm keeping!!!!!! :cool:

 

Here's a picture of the LG headers installed: http://www.lgmotorsports.com/picture...5_headers4.jpg

From a picture of the Corsa Ti exhaust installed (7/02 Corvette Fever) the Corsa resonators (minus the short h-pipe) start right about the point of the rear clamps of the cats on the LG setup.

It would appear that by shortening one or both of the necks on the cats included on the LG setup and going without the Corsa h-pipe; it could be made to fit. At least that's what appears to be possible from looking at the pictures. I'm sorry I can't post the Corvette Fever picture but I don't have a scanner :sad:


[Modified by SFVetteman, 5:47 PM 10/2/2002]

 

Thanks Bill - sounds like the LG headers will not work for practical purposes. Wish Lou would confirm, since I really did want to use these headers but don't want to sacrifice my super lightweight Ti exhaust, which cost big bucks and which I really like.

I guess I will be looking at the SLPs (as the next-longest SS tubes which will fit)???

 

No, not generally - that is an old myth. Of course a large clumsily designed exhaust system could you power, but pretty much the less restriction the more power you make. The 32" long tube design is tuned such that the length of the primary tubes creates the "exhaust scavenging effect" which is maximizes power and moves torque power band. This scavenging effect when used with our x-pipe can give more power than just straight open pipes alone.

 

You can make anything you want work. I'm sure any exhaust guy could make the LG's work with whatever xpipe you have. Just ask lou if he'll sell you a set without the fancy swappable cat pipes since your exhaust kinda means you can't have that. You can have your cake and eat it too, it'll just take an exhaust guy a couple extra hours to fit it up. The money you save from not buying the "extra" stuff from lou and just getting the raw headers will outweigh the costs of the extra labor.

 

Don't be too hasty guys, Lou can fabricate anything. Give him a chance and I'm sure he'll make some adapter tubes to work with the Corsa Ti Catback or anything else you want. Heck this weekend we had a customer with a solid roller 418 CID motor and Lou made some custom "off-road" turn down pipes on the stop that work with the LGM headers. I witnessed it being done in less than an hour! :yesnod:

 

I saw those this weekend....and I have to say, if I ever end up with LGM's headers I'm gonna have to get one of those turndown pipes just for poopies and giggles. Wonder what my car would dyno like that :eek:

 

Definitely wait for Lou's reply. Remember that’s just my opinion from looking at the pictures and I could be wrong. If there were a picture of the LG setup taken from the same angle as picture in Corvette Fever (shot straight up from beneath the car at the cats connections), it would be easier to tell. If I had the Corsa Ti and didn’t live in Calif., I’d buy these in a heartbeat and make them fit if it’s at all possible. I love these headers and it’s only the lack of a CARB number that keeps me from buying a set.

 

Dammit Lou we forgot to call you... sorry. Busy day. I'll hound Nate tomorrow :yesnod:

:cheers:

 

Thanks Bill & others - OK, sounds like good advice and I can wait long enough to make sure I get the best system possible. But just looking at the pics I had to agree that it doesn't look like there is room. I need the "resonator" pieces of the Corsa Ti system (since there are no mufflers), and I also need some kind of crossover (H or X) for this to work right. This is a track car, but is driven on the street, so while I don't want to make any compromises, I am kind of resigned to doing so. Thanks again.

 

I just got another set of flanges(the ones that weld on the cats)for my TTS.I'll see how much louder the Ti gets without cats.That might be the solution to get the LG's (that I really want)to fit!!!!

 

Thanks slammed; not having heard further from LGM, I went ahead and ordered the SLP headers from TByrne (good price, questionable headers). I will be pleased to post before/after dyno results, as this will be the only mod since my last dyno pulls.

 

Maybe this will help you guys out. It's a picture of the Corsa Ti Race and TPIS headers before off-road pipes were installed. It's TAMU's car. :p:
http://64.208.21.183/Jim/Pics/corsatitpis.jpg

 

Hi,
I guess I have not been looking at the Forum and I missed these latest questions.

After doing some checking, I looks as though the LG Headers will fit on the Corsa Ti system without the cats FOR SURE. But I need a car in the shop with the ti system to check it out. I think that it will work with cats, but no "H" pipe, but I am not sure about using the cats in conjunction with the "H" pipe.

So the bottom line is that the headers will work with no cats, and we are still checking wether they will work with cats.

Thanks,

LG


[Modified by LG Motorsports, 9:53 PM 10/3/2002]