Cygnus

Since moving from the C3 to the C4 one of the things that I miss most is the rumble. Now people only hear me coming when I have the stereo cranked up. Currently the exhaust sounds like a Cadillac. The previous owner had the current system put on late 2011.

Keeping in mind that I have to pass the stupid smog tests here in Ca, what are some recommendations for a more throaty exhaust?

Borla seems to be the most popular, but I'm open to suggestions.

Pete919

What exhaust system do you have on it now? Wish mine was quieter, it has flowmasters from previous owner.

Cygnus

Dynomax, and they are super quiet. Honestly it doesn't sound like a sports car at all.

gerardvg

The standard c4 muffler had the entry go in one side, then the exhaust gas has to u turn (behind the dummy pipe outlet) and go thru the baffles then u turn again to exit the other outlet.
They are great at reducing noise but are a bit on the quiet side, i did have some mufflers fitted that were a straight thru type (could see right thru to them) now they sounded great, everyone used to comment on how good my vette sounded. But the DRONE!!! it was a year or so and i found original mufflers to replace them and i love em

Maybe i am getting too old but the drone is at the speed where you tend to drive most.

They are still hanging in the garage but i dare not put them on again

cv67

Loud mufflers doesnt affect smog. Had delta flows 50 series on my old 89 and they never looked at it twice that was a Ca test only facility. Long as it doesnt exceed the decibel limiit which it shouldnt even with elims

They dont start getting real loud til youre making good hp

TorchTarga94

If you want the rumble of a C3 get rid of the mufflers and run put straight pipe in its place with the factory tips welded on.

WW7

If you like the sound of Borla you can buy just the Borla muffler instead of buying the whole catback setup and have it installed or do it yourself...It's called the "Borla stinger" muffler and buying just the mufflers can save alot of money.. I believe they were about $125.00 apiece when I looked them up last year.I called Borla and the Tech guy there told me about these....WW

1993C4LT1

I have Flowmaster 40s, love the sound. A little drone, but that doesn't bother me.

Motsiv2

How bad is the drone level with that setup?

Bandit1977

Do know what type/brand the straight thru type were?
I'm thinking about fitting muffler eliminators to my 88, but I'm wondering if and how bad the drone might be?
Ken D

mickey5

Read someplace that you can eliminate the drone by installing a rear Y pipe with an equalizer (crossover pipe) installed. Anybody using one??

eutu1984

I have a crossover on mine and I still have the drone problem, I read in a post the best way to eliminate drone is to sound proof under the carpet in the hatch area.

TorchTarga94

It's there. But not too bad, depends on how tolerable you are, and if the car is an auto or manual. When I had that setup I loved the way it sounded but I have an hour commute each day and got tired of it on the parkway. Running stock mufflers with an X-Pipe now. I like it better but wish I had some of the grumble back.

Cygnus

Through many searches here on the forum, Corsa and Flowmaster seem to be the most prevalent. Locally it seems as if everyone has a Borla.

I don't really have a preference at this point.

Slow_Lane

I have Borla on mine and it sounds mean as **** when you boot it but it's too quiet at idle and low rpms for my taste. I think in the future I will install headers ans high flow cats and keep the Borla cat back. Maybe freeing up the cats will let just enough sound through to make it sound aggressive at less than 100% throttle.

fredd1

If you want something durable you can't go wrong with Borla stainless. I replaced the rusty OEM mufflers & Y-pipe with Borlas on my '84 about 22 years ago and they still look clean, even at the welds. I wasn't much interested in the sound or performance, I just wanted an austenitic stainless that wouldn't rust thru in 5 years (although they do have a nice low rumble at idle ).

Cygnus

99% of my driving is in town, so I am looking for that rumble at idle and low speeds. When I had the C3 my gf heard me turn at the corner 3 blocks away. While I don't need that again (was kind of a pain to talk on the phone or hold a conversation with a passenger) I want people to know I'm coming down the road.

From the borla's that I have heard (not sure which model or other modifications made to exhaust) they sound pretty good.

I have not in person heard a C4 equipped with Corsa's, but online videos seem to get a reaction.

I'm not 100% sure how much I can mess with the cats or eliminators before the smog rules get bent, so I want to limit the changes to mufflers and see if I can get some sort of better sound.

cv67

These sound good on teh L98

Think those are the oval not the welded ones. They have a little rasp/bark to them without being too loud. Similar to corsa but flow better.

TA

Here's Flowmasters vs Corsas on my 91. The only change in the videos is the mufflers.


http://forums.corvetteforum.com/c4-t...on-videos.html

MRPVette

That is how mine is set up and I love it,nice rumble at idle and nice sound when getting down on it ,the drone is minor to me but I do have dynomat on my floors.