After market exhausts

[StevieRay]

I recently purchased a 1994 covertible and I love it except for the "buick sounding" factory exhaust. Suggestions for an after market cat-back system would be greatly appreciated.

StevieRay

[Edited by StevieRay on 03-08-2001 at 08:34 AM]

[Rob]

The Power Effects exhaust system has been rated highly in magazine test comparisons. They have a link on our <a href="../parts.html">Parts and Accessories</a> page under Exhausts.

[Ken]

Vaughn? ;)

So yer lookin' for an exhaust system, eh? Well I'm sure you're gonna get a lot of response here. :D

I like my "Side Effects" system. It's cat-back and fifty-state legal; not as loud as the earlier side exhaust systems, yet still delivering the rumble I like, while allowing you to hear the radio and carry on a normal conversation if you prefer while cruising at speed.
They also sound GREAT at WOT. :J

Check it out at:
Lawrence Keech Ent. (http://www.powereffects.com/SideEffects.htm)

[brooks]

I have a B & B 3" cat-back on my GS. while the performance is ok, the exhaust resonates really bad between 1500-2000 RPM, to the point it is almost impossible to talk

[Tom Bryant]

StevieRay,
I don't have a C4 but I vote for the Side Effects. It is amazing how much they look like they grew on 87's car. If I had a C4 that would be my 1st mod.
Tom
p.s. I hope you didn't see how I misspelled your name before I got back to edit it. :o

[Edited by 59Tom on 03-08-2001 at 12:34 PM]

[Vetman]

StevieRay,

I'm running a Dynomax cat back system and mufflers on my '86 convt. Owned it for 4 years and 20,000mi with nary a problem. It's an affordable system that is louder than stock but, but not as good sounding as a "power effects" system or side pipes. I've driven a Vet with a Flowmaster system and that was really resonant inside. The Dynomax with the top up can be fairly annoying but with the top down is quite tolerable.

In my persuit for performance I've added headers by Arizona Speed and Marine and eliminated the 2 precats prior to the main cat. Now it sounds like I want it to, is legal (passed the sniff test") and has improved performance. At WOT it is down right scarey.

If you find in your travels, an internet site that has recordings of muffler sounds, let me know. There are a good number of systems that I'd like to hear like Corsa, Borla or Targa.

Like shopping for a stereo system, exhaust rumble has got to sound good to you. Happy hunting.

Vetman

[Bob Baker]

Stevieray I have Corsa Exhaust I love the sound. This is very easy to instal l It is worth looking into.l

[GS796]

Flowmaster !! this is the exhust system that sounds the best and produces the most
torque, I've heard them all in the business I'm in. If that's not enough, there priced less
then the others. There is a small resonance at about 3000 rpm. They make the car sound
like a Corvette, not like the pop corn systems that are available. (names withheld to protect
inferior) :)

Dave

[fastglass95]

One word: "CORSA"
In my opinion, you can't beat the Corsa System for Cat-Back performance and ease of installation!
Lifetime Warranty also! ( all stainless steel )
Sound is Awesome :D
better than my old "muffler eliminators"
You will like it.

[POWR TRP]

Try www.borla.com for sounds for systems. You will have to down load the free shockwave sound but they'll run the sound of a few systems for your car.

[ozzyvette]

on my vette i have flow master mufflers. It has a low, loud powerful sound. and at 3,000 RPM's and above it sounds like a ferrari. It doesn't sound like a muscle car. Everyone loves and notices it.

[Sensei Earl]

I get compliments on my flow masters all the time

[NoCones784]

I agree with FastGlass--CORSA. It makes a Vette sound like it should have from the factory. No tinny sound, just a good, solid powerful note. A friend and I removed the system from my 96 and installed the CORSA in 1.2 hours! It just goes together too well.
You won't go wrong with this system.

Tim

[nevadacoin]

I have found a corsa c4 exhaust system at thelapd.com for $749..has anyone installed this system on a 1994...and what are your thoughts?

[vms4evr]

I found a site that has some guys 94 Vette with Corsa system and he recorded the sound for interior and exterior. You just have to download the sound files. Not bad at all.

http://www.spacestar.net/users/europa68/corvette.htm

Graham

[nevadacoin]

Thank you...I am now sold...

[fastglass95]

Good job Graham, Thats worth a thousand words!
I like the stock vs. Corsa in "exterior idle" sound comparison the best.

[BigRed]

I just got Dynomax Mufflers on mine I love em they rumble Real nice but not to loud but they also put out 1133CFM!! Borla can only do around 850 and flowmaster like 350-450 thats why I bought them and Id never look back (On the Negative note they cost me a arm and a leg) :eyerole

[vms4evr]

Yeah I thought you folks would get a kick out of that. Not quite like sitting next to the car but you get the idea. I heard another recording someone else did and it sounds about the same. Good sounding system. I'm sold too. I'm just torn between doing the ring & pinion change first or second. Definetly want the Corsa system though. Very few of them have figured out how to remove that annoying droning sound from the cabin at low rpms. Seems like Corsa figured it out quite well.
If you check on Yahoo and a couple of other places they sell the Corsa for about $800 sometimes. Best price I've seen so far.
Graham.

[Hib Halverson]

The best value in C4 cat-backs is the Flowmaster. It combines a reasonable performance increase (usually 6-10 hp on an LT1) with great pricing and killer sound.

Now if you want to spend more money there is a little more power to be gained over the Flowmasters with the Power Effects or the B&B Triflo. I should add that the extra power from Power Effects comes only if the bypass valves are set wide-open. The Power Effects wide open and the B&B are quite loud.

Borla C4 systems don't offer a significant performance advantage over Flowmaster but they do cost a lot more by virtue of the stainless steel construction.

I haven't tested the Corsa C4 system but a fair amount of C4 owners use it and have positive feedback.

[nevadacoin]

Thanks Hib,
I have ordered the Corsa @THELAPD...$800 total included overnight fedex to Reno..I was very impressed with the sound interior and exterior(sound files provided by a member)..I greatly appreciate your response and knowledge of the technology,,
regards
Larry:beer

[nevadacoin]

I installed the c4 corsa, and I am totally in love...You cannot hear it inside the vette, but outside!!!!!! Oh my god...sounds like a 396/375hp 1970 chevelle super sport:

[fastglass95]

Glad you like it "nevadacoin", I agree 100%!!
It's the best exhaust going right now :upthumbs
I can't get enough of it. :)

[johnny]

If I had the chance I would bought a Corsa, but for my '86, they did not make one. My friend has a zr1 and is very pleased with it. I look good and the sound a Goooood! No resonance and ekstra HP.

Second choice is the B&B- tri-flow, good performance (goes up till 700hp engines) and very loud sound. (I have no cats)

But resonance !!!

They say it leaves after 5000 miles.


So I bought the B&B tri-flow


John.

[Edmond]

[B]Johnny, you have no cats? My buddy at work has a Mustang GT with no mufflers, but 4 cats and it sounds incredible.

How in the world do you manage the emissions part? We in Cook County, Illinois have very strict emissions and the thought of having no cats has crossed my mind.

Also, with this midwest weather, should I go stainless steel all the way when I get my high performance mufflers? Should I do the whole exhaust system, headers/high flow cat, or are the mufflers good enough?

[brooks]

the B & B don't get better after 5000 miles

[johnny]

In the Netherlands;

All new cars must be emissionlegal.

Old cars like C3 or older don't.

Imported cars older than 10 years, they must be less emissionlegal.

Sometimes they forget to write it on the carpapers, so then you do'not have to use a kat.

My vette they forget...........

Once in a year evey car older than 3 years MUST be official checked, then they also check the emission. Then we put the cat back....

When the police stops your car and they see you have no cats, you get a ticket ($500). But my vette do not.

John.

[johnny]

If you want more performance you should do the whole exhaust, rvs in not nececary but its smarter. Also you have a liftime garanty on the exhaust.

For a normal tuned enigine you use 1 5/8 headers and a 2,5 " exhaust.
For a blower enigine (vortech) use 1 3/4" headers and a 2,5 " exhaust.
For the everything bigger and more hp you use the 3" exhaust.
Turbo's? No cats.

Have you an idea how much **** goes in the air in China, India or USSR?????? 100 times more than we do in the westerncivilisation. So...when I drive 5000 miles with my vette and without the cats..

No cats = 25 Hp

[Full Bull]

you folks that have the corsas....still happy with them? The sound file was awesome...better than anything I heard from borsa or flowmaster! Let me know if you're still in luv! :P

[johnny]

Newbie,

Good luck with your first vette. My self? I should had bought a vette 20 years ago.

Exhaust?

For the newer vette, like yours, you can have the Corsa 3", you MUST buy the headers too, long tubes ofcorse.

My friend, who has a ZR1, and run 1:12 compression ratio, has a 550 hp and drives the corsa 3", it's awsome.

Myself, I have the B&B- triflow 2,5", why? They coulden't make it bigger. I do have the 1 3/4" headers from TPIS


John

[nevadacoin]

The Corsa gets better every day...The deep tone and sound beat all others..:cool

[maxrevs85]

I just pulled the entire exhaust off to get to the drive train, its a flowmaster system. I like the sound and interior resinance isnt bad at all. I do want to get rid of the cat, do they make a piece to replace it ? Or is this an owner fabricaqted part?

[johnny]

yes, I have one. It is a rvs pipe.

[maxrevs85]

What is rvs pipe?? :confused

[Ken]

Hey Dave, seeing as how Johnny is from the Netherlands, so maybe he mis-spelled what he meant, but I think what he meant to say was a "service" pipe. ;)

_ken :w

[Edmond]

I read somewhere that said no cats=25HP. Any thoughts on that? Wouldn't haven't no cats significantly increase the sound to almost unbearable levels?

[maxrevs85]

Thanks Ken, It had me surfing for it. LOL And I am wondering about the sound factor and if it would be significantly louder or not.

[Ken]

Oh, it'll be louder alright! :L

_ken :w

[maxrevs85]

I have the Flowmaster system . Will I not like it without the cat?
:eek

[Ken]

I'll have to bow out here, you know what I run. Anyway, there are a lot of others who'll offer their opinions here shortly. ;)

_ken :w

[maxrevs85]

Ok Ken, thanks :_rock

[johnny]

rvs=roest vrij staal (dutch) OR Stainless Steel

[Ken]

Sorry for my mistake Johnny. :o

_ken :w

[johnny]

http://www.movit.de/rahmen/corvette.htm

Hi Ken,

It's for you this link, but they have a problem with the webpage I think. Try it!

Today my car is going to the tuner, for making the new EMC on the car, also they will remove my, airco,abs,cruiscontrole.
After that I get my new aluminum flywheel, shifter,and clutch.

And when I am lucky, the new porsche brakes from movit, 380mm 6 pistons. STOPPING POWERRRRrrrrrr

[Ken]

Thanks Johnny, I saved it to look at tomorrow. Looks like a cool site. :cool

_ken :w

[Tom Bryant]

The site worked fine for me. Keep us posted on your modifications and how well they work. Looks like you have a plan.

Tom

[maxrevs85]

Thanks Johnny, I'll look into the roest vlij staal. :D
Your car is going to be a rocket!!!

[jdm86]

I have a flowmaster system on my 86 and I will not purchase one again--interior resonance(sp) is horrible at 1500-3500 rpms

[Tuna]

Here's my vote for CORSA - love the sound and it's reasonably quiet inside still.
When the weather warms up some, the car is going back on the dyno to see what's changed. In the meantime, it feels better already and sounds wonderful.

[froggy47]

Corsa

Great look, great sound, power gain, ezinstall, NO RESONANCE, not inexpensive though.