Exhaust Too Loud
Thread Starter
Instructor
Joined: Nov 2010
Posts: 233
Likes: 0
From: St Petersburg, FL
Exhaust Too Loud
So my '92 came with true dual exhaust with no converters and Flowmaster Original 40 series mufflers. It sounds great at idle but is almost un-driveable at speed. It has a terrible interior drone (imagine that). I am hoping to replace just the mufflers and quiet it down a bit.
Is anyone running an exhaust system with no cats? What mufflers?
Thanks!
Is anyone running an exhaust system with no cats? What mufflers?
Thanks!
Instructor
Joined: Aug 2010
Posts: 238
Likes: 0
From: Asheboro North Carolina
My '95 has a completely stock exhaust except mufflers. When I bought it several years ago, the previous owner had installed Flowmaster 40's but had gutted the inside. Still don't know how that was accomplished. Picture boat in a bottle then trying the get the boat back out. Anyway, when I picked the car up, I got on the Interstate and thought, OMG what have I done! The drone was so loud at 70mph I couldn't hear myself think. Within a few days I had a local shop put on a set of Walker mufflers very close to stock. I don't wake up or scare anyone, but cruising down the highway is now something I enjoy. It's almost too quiet. It's so quiet I think I'll put on a set of Stainless works headers. 
Thread Starter
Instructor
Joined: Nov 2010
Posts: 233
Likes: 0
From: St Petersburg, FL
Safety Car
Joined: Aug 2002
Posts: 3,842
Likes: 230
From: SANTA CRUZ CA
My only C4 experience was with the stock mufflers replaced by MagnaFlows. My Mags got louder over a few months to the point of displeasure.
With forum help, you will find the perfect system.
Thread Starter
Instructor
Joined: Nov 2010
Posts: 233
Likes: 0
From: St Petersburg, FL
Good news! I'm sure you have read the Corsa comments ..... nice note, no drone, etc.
My only C4 experience was with the stock mufflers replaced by MagnaFlows. My Mags got louder over a few months to the point of displeasure.
With forum help, you will find the perfect system.
My only C4 experience was with the stock mufflers replaced by MagnaFlows. My Mags got louder over a few months to the point of displeasure.
With forum help, you will find the perfect system.
I heard the Corsa's at Carlisle, they seem a bit to raspy and European to me.
I did run a set of Dynamax mufflers on a car years ago, but they seemed a little too quiet.
Racer
Joined: Sep 2010
Posts: 327
Likes: 2
From: se iowa
http://youtu.be/rd_LQFx0-JI
I can't tell you about the sound at 75 yet because it's not been there-I'm down to two gears.
http://youtu.be/EqOylswBpuk
These are like a targa or kbd muffler.
That's the idle though.
I can't tell you about the sound at 75 yet because it's not been there-I'm down to two gears.
http://youtu.be/EqOylswBpuk
These are like a targa or kbd muffler.
That's the idle though.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Melting Slicks
Joined: Mar 2008
Posts: 2,351
Likes: 222
From: Delta B.C. Canada
2023 C7 of the Year Finalist - Unmodified
2019 C4 of Year Finalist (appearance mods)
2015 C4 of Year Finalist
Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
If I had an LT with your issue, I'd look into reinstalling dual cats. Probably something like these....
http://www.car-sound.com/02product/u...IC%20CONVERTER
I think it's "bout-time" you got some cats back on that thing!" LOL
Racer
Joined: Jan 2012
Posts: 274
Likes: 0
From: Sayreville, New Jersey
My '94s exhaust is almost completely bone stock. Cats and resonator still in place, but I just had a set of muffler eliminators installed. Sounds great and the drone is there, but not unbearable.
Pro
Joined: Oct 2008
Posts: 706
Likes: 265
From: Jyväskylä, FINLAND
So my '92 came with true dual exhaust with no converters and Flowmaster Original 40 series mufflers. It sounds great at idle but is almost un-driveable at speed. It has a terrible interior drone (imagine that). I am hoping to replace just the mufflers and quiet it down a bit.
Is anyone running an exhaust system with no cats? What mufflers?
Is anyone running an exhaust system with no cats? What mufflers?
7th Gear
Joined: Jun 2011
Posts: 7
Likes: 0
From: Marion/ Crockett Va
Thread Starter
Instructor
Joined: Nov 2010
Posts: 233
Likes: 0
From: St Petersburg, FL
Why would you want to? Is this a track car or 500hp build? If not, cats don't hurt, in fact help, and will do alot for your drone.
If I had an LT with your issue, I'd look into reinstalling dual cats. Probably something like these....
http://www.car-sound.com/02product/u...IC%20CONVERTER
I think it's "bout-time" you got some cats back on that thing!" LOL
If I had an LT with your issue, I'd look into reinstalling dual cats. Probably something like these....
http://www.car-sound.com/02product/u...IC%20CONVERTER
I think it's "bout-time" you got some cats back on that thing!" LOL
Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
For a stock LT car, ceramic Magnaflow bullet cats could be added for about $140/pair + installation. How close can you get to that with mufflers like: Borla, Corsa, Magnaflow, Flowmaster, etc....
Plus, it would smell better.
Thread Starter
Instructor
Joined: Nov 2010
Posts: 233
Likes: 0
From: St Petersburg, FL
IMO, aftermarket performance cats are less expensive than these brand-name performance mufflers.
For a stock LT car, ceramic Magnaflow bullet cats could be added for about $140/pair + installation. How close can you get to that with mufflers like: Borla, Corsa, Magnaflow, Flowmaster, etc....
Plus, it would smell better.
For a stock LT car, ceramic Magnaflow bullet cats could be added for about $140/pair + installation. How close can you get to that with mufflers like: Borla, Corsa, Magnaflow, Flowmaster, etc....
Plus, it would smell better.
You are so right about the smell!
Drifting
Joined: Aug 2009
Posts: 1,971
Likes: 243
I'm not sure just how common the hanger issue is on the mangnaflows. They've been on my car for 3 years issue free. The welds on the hangers look solid.
I removed the resonator to make it louder. The Magnaflow system with resonator (I do also run factory cats) is fairly tame. Removing the resonator did add some volume but it mostly made it sound more aggressive, which is what I wanted. It added some drone, but I have 4.11s which I think help greatly in keeping it out of the drone zone on the highway. Despite the added resonance I'm happy with it. If it was a daily driver I would have left it with the resonator though.
I removed the resonator to make it louder. The Magnaflow system with resonator (I do also run factory cats) is fairly tame. Removing the resonator did add some volume but it mostly made it sound more aggressive, which is what I wanted. It added some drone, but I have 4.11s which I think help greatly in keeping it out of the drone zone on the highway. Despite the added resonance I'm happy with it. If it was a daily driver I would have left it with the resonator though.
