Yes Brian.... I got your email. Thanks for responding and I'm still undecided.

Thanks for all the responses!

 

The Corsa by itself is fairly tame at idle, about what you would expect stock. It's a touch bit snappier than stock under power and makes a fairly decent sound. Unfortunately I don't have any great audio of it.

I originally wanted the sound that you heard after I heard a sound clip of Tom Byrne's project car that was modded up. Sounds really close to what I have.

To get that sound minus the loping of the cam, basically I have a set of Grotyohann 1 7/8 long tube headers and their y-pipe with Carsound cats on it. It's a full 3" y-pipe to the Corsa 3" collector. That will pretty much make the Corsa very very alive. A set of headers typically run about $1400 with the y-pipe. It's cheaper to get them on a group purchase like I did.

If you really want to make it pissed off you basically need to put a cam (and heads) into the car. That may run you upwards of $4,000 depending on how aggressive you are! It could also be as little as $1,500 for something milder.

All the technical stuff beyond that should be on my website, minus costs.

I'm very happy with how the car sounds and I'm amazed I got it to sound this good.

 

I have to laugh everytime I see one of these posts comparing exhaust system. For the sound- deep (not tinny), throaty, loud as hell at wot, and for the quality- mandrel bent stainless steel, with a choice of tips......you can't touch the loud mouth at $349 from Tbyrne.com

The GMMG-chambered....whatever, at $700 they are nuts. Its a glorified muffler. Corsa, Borla, all way too expensive for the sound, which isn't as good as the LM. And if you don't like the sound of the LM (some complain of a drone at 70mph) you can buy Hooker Large Bore exhaust resonator tips (look great) (Jegs PN 520-22011) for $32 each and away goes any hint of drone, and it is still almost half the price of the other systems..
Can't touch the Loudmouth.

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99 SS, Dark Metallic Blue, M6
SLP lid, KN, TBB, SLP Y-pipe, SLP loudmouth
ported MAFs, Nitto 315 DRs
Currently: 1/4 13.06@113.8 (gtech runs high in mph by about 4mph), 0-60 4.77 (w/passenger) Gtech'd
12.99@110.2, 2.06 60ft - Tazzo.
Also, 331 rwhp as measured on the Gtech

 

I have the GMMG installed on my 2000 SS and all i get is compliments, that is the first question people ask me at shows is i heard ya pulling in man what exhaust is that!!! I love it true it is a little salty but it is different.

 

Here are some sound clips of my car with TTS long tube headers and a Corsa exaust.

Coldstart
http://home.earthlink.net/~bozar/CorsaStart.mpg

Idling and blipping the throttle a bit
http://home.earthlink.net/~bozar/CorsaIdle.mpg

I'll try and get some WOT movies later in the week...

I did not like the Corsa so much after break in when the engine and exuast were otherwise stock. After putting the long tubes on it I am VERY happy with the sound and tone.

It is truly a Jekyl and Hyde exaust, quiet at low rpms (great for driving past cops or granny's house at 2000rpms), but it screams like a banshee at WOT. Very nice.

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'02 Z28 : MTI lid, TTS headers, Corsa exaust, ASP pulley, Pro5.0 w/Lou's ShortStick, Konis (front) Bilsteins (rear), 35mm ST swaybar, SS wheels, SLP SFCs, disabled DRLs, *all* the free mods! :NEXT: ported TB?, NAAAAWZ?? LS1edit???

[This message has been edited by SpikeLS1 (edited August 25, 2002).]

 

Most any of the systems under discussion sound good, but I went with the GMMG system due to its distinctive wail at WOT. As far as the Blackbirds go, I work for the Pontiac dealer that contracted GMMG to build them. Only a handfull of 435 horse cars were built. Most were 385 horse cars. The modifications are bolt-on, and the cars do not sound different from my 2002 Formula with the same system.

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Little red light on the highway; big green light on the speedway, hey, hey, hey!

 

I think that the Corsa sounds weak as did the thread originator. I have and love my GMMG system, the internet downloads dont seem to do it justice, I get compliments all the time. Just last week from 3 LS1 fella's pushing me out of the snow..."Well the car isnt moving but damn that exhaust sounds mean, what is that?" Even had some muffler men follow me around my home town just to catch me at the gas station to compliment and inspect my exhaust. They loved the sound more than anything they have ever installed, including Flowmasters. They said it was the closest 4th Generation exhaust sound to the original muscle cars of the 60's and 70's.

-Dustin-

 

I agree that the corsa doesn't sound stock... it sounds like a v6 with a flowmaster.

 

I think my exhaust is better then any catback made, i had few since ive owned my car and sold them all. I had a flowmaster catback, Borla adjustable, thise two sounded almost stock most of th time even with headers. Then the SLP loudmouth which was my favorite but it sounded raggity at certain RPMs once i put an off road Y and ported my heads.

finially got tired of catbacks tips comming uneven and ratteling against my rear axle, so i did my own custom simple cheap, lite-weight exhaust. I lost like 30-50lbs. I jsut got a piece exhaust pipe and a bullett resonater and ran it long enough so it stopped right before my rear axle, then dumped it with a turn down. It sounds alot better and meaner then any atback i had. Kind of like a cutout but with no rasp whatsoever. I also like the clean look of no tips. Nd it only cost like $50 for all 3 parts. a 2ft pipe, turn down and a bullett.

 

Corsa sounds like a V6 with a flow master? wtf are you smoking? have you ever even heard one in person? It sounds ****in good and if you dont think so you're probably a gmmg owner who is butthurt over how ugly your tips look. Lookhere ...thats completely stock, I'll agree that its not very loud at idle but it sounds good and CERTAINLY does NOT sound like a V6 w/ flowmaster. if you want a louder idle, open up the y pipe, want more? get headers.... if you STILL think that it sounds bad then maybe you ought to just run open headers or the loudmouth

 

i have a 94 z28 with a bunch of mods-heads-s-trim blower. i have mac midlenghts and off roadpipe and loudmouth system and have yet to hear a f-body sound as loud or as good. i'm all in favor of the loudmouth......

 

I have GMMG and I am not butthurt over my tips. They look sweet and I get compliments all the time. I guess round slash or oval slash tips look ugly unless they are corsa? I think the corsa does remind me alot of my friends V6 with a gutted cat and catback. I admit I thought corsa was decent, but that was before I heard many other catbacks. Fact is its weak sounding compared to GMMG and others. I have always thought that the sound of your car is like its attitude. Many catbacks have a mean badass attitude (GMMG/LM/FM/Hooker), Corsa is more mild, kind of like an European sports car sound. It doesnt give much attitude, at least not enough for me.

-Dustin-

 

my beef with the gmmg tips is that they are of very poor quality (which wouldn't be such an issue if the gmmg were not so freakin expensive). they look like some monkey made them from a coffee can. The corsa tips are smooth rolled, mirror polished and very well made observe: corsa monkey cut gmmg tips

If the gmmg system were cheaper I wouldn't even bring it up, but the fact is the gmmg costs as much or more than the corsa and there is not one single thing on it that justifies it. Granted a lot of the cost of the corsa comes from the tips which are outrageously expensive, but as the saying goes "save and get what you want or else you'll always be wanting"

I'm sure the gmmg flows great and sounds great but for $700 dollars (+150 for the tips if you want them) I just dont think its worth it.

Now as far as sound goes (the topic of the thread anyway), I've never heard any gmmg in person but what I have heard online sounds great, so yeah, its a great sounding system.

When I installed my corsa I started and drove the car with just the ypipe and cats on it. After installing the exhast I noted that the sound was VERY similar only quieter. The tone hardly changed but the volume was reduced. Euro-trash it is NOT.

While its pretty tame on a stock car, on a car w/no cats and headers (not to mention a cam) its plenty nasty:
corsa with medium cam, headers, random tech. cats. .....does THAT sound like a euro car? does it sound like a V6? Does it sound tame? quiet? no?.....now imagine if it didn't have cats....

I guess I should make a note that I'm not trying say the gmmg is total crap, only that in MY OPINION it's not worth the price. While I was looking at exhausts if the GMMG were say.....$450-500 I probably would have gone with it.

 

I personally like the way my stock muffler sounds with FLP headers, heads/cam, but if I had to choose I would have to say the GMMG, the Corsa sounds real nice in LS1's I think at high RPM like an Indy car but I'm more concerned about part throttle, low rpm, my stock muffler sounds awesome with no cats also, and when I want power I open my electric cut-out which is right after the Y-pipe on the FLP's.

 

I guess I should have said that compared to my GMMG the corsa sounds mild. The sound clip was nice, but if you heard my GMMG in person you might sing a different tune and I can bet I wouldnt still be typing. Sound is somewhat opinion based, I wanted the closest representation to older style muscle cars of the 60's and 70's, a very deep throaty mean V8 sound. GMMG was the closest thing using chambered mufflers similar to what was used at that time. The sound is exactly what I wanted, but again Corsa maybe exactly what you wanted.

As for the tips, I base about 5% of my value of the exhaust on tips. The rest is on power, design, quality, and sound. Tips are appearance, and appearance is just personal style. I dont really have much of a thing for rolled tips but I have to say Corsa's are the nicest rolled tips on the market.

(with Premium Pro-Series Tips) -- $888.09
(with Pro-Series 3.5 Tips) -- $759.69
(with Pro-Series 4.0 Tips - Camaro Z28 only) -- $781.09

GMMG: $700
GMMG w/Optional Tips: $850

The GMMG doesnt cost as much or more until you add optional tips. It actually costs less. Even with the ovals its less than the highest optioned Corsa. I dont think tips make the exhaust so base for base the GMMG it less.

The thing that I think makes GMMG so awesome is the design. No other exhaust on the market (except the recent copy cat Stainless Works one) uses a design like GMMG's. The catback splitting over the alxe and having two tubular chambered mufflers criss-cross under the rear is jaw dropping to most people. Not to mention it looks incredible from behind since usually you just see F-body's with a cross-section single muffler under there.

The performance of the catback is unquestionable, being used on the ZL1 and current Mr. Chevrolet 427 LS1 project. This catback really flows, hell its basically all tubing. I think the mufflers hardly live up to their name, which I think is a very good thing. I know my catback is producing peak power since I spoke with GMMG about the flow ablility and they had done dyno and track testing on a 5XX blocked car with GMMG and then GMMG with a cutout. The cutout made nearly nothing over the GMMG alone. The figure was low single digits, but I wont quote anything specific. Hell when I strapped that puppy on, you could feel a healthy difference at all RPM's.

Sound wise its preference. GMMG was exactly I wanted for the sound and attitude of my car. Its something you have to witness to understand, which is the main reason no one gets why GMMG owners pay what they $700-850 for it.

Now I couldnt afford a new GMMG, no way. But I bought a used one with 3,000 miles on it and spent $500, not bad since it came with the ovals tips. To me its worth every cent I paid, but again each to his own.

-Dustin-