96 Corvette Flowmaster 40 muffler noise inside car.

cobra1128
185

Asked by cobra1128 Mar 20, 2010 at 07:54 AM about the 1996 Chevrolet Corvette Coupe

Question type: Car Customization

I had flowmaster 40 mufflers put on my car for a nice sound and they do sound good, but in a closed cabin it is too loud. Does anyone have any idea's how I can lessen the noise in the car besides turning the radio up or going back to stock mufflers.

10 Answers

Larry Quigley
5,300

Just install some sound deadener. That should help to reduce or eliminate unwanted noise.

cobra1128
185

Thank you for your reply. Someone I work with said try dynamat what they use for installing car sound systems, so I did and it did not work noise still there. Is there some other sound deadner you know would work better. Thanks again.

Larry Quigley
5,300

Where did you put it? The trunk will need to be completely lined as well as the floor and sides of the interior.

cobra1128
185

I did the whole trunk area and behind the seats where the noise was mainly coming from, but not the doors or floor boards. I guess thats my next step then. Thanks for you help.

Larry Quigley
5,300

The fiberglass really doesn't help to reduce the noise so you got to use a good bit of it.

Joe Finis Sr.
795

Dynamat will silence a lot but not all of the noise, especially if it's due to a resonance.

Larry Quigley
5,300

Resonance is caused by low frequency vibration and dynamat will stop vibration (road noise and etc.) so if used correctly it will get rid of it.

cobra1128
185

Thank you for all your help, I will try what you suggested and hope for the best. I have to order this stuff no-one sells it locally since circuit city went out of business. The only other option would be to go with a $1400.00 Corsa exhaust system which is supposed eliminate the noise, so I have been told by others such as the shop that put the flowmaster 40's on my car or go back to the stock mufflers. I just received a phone call from a friend telling me that Zeibart the people that do undercoating also does a spray on sound barrier which is a product 4 times heavier then undercoating and is supposed to quiet things down. I will have to call them a hear how expensive this is. I will let you know if you like, I will try to contact them sometime this week when I get home before they close. Once again thanks for your help.

cobra1128
185

Thank you Joe.

Larry Quigley
5,300

You could always try wrapping the muffler itself in heat wrap or replacing the exhaust hangers if they are hardened.

Your Answer

Add photo

Related Questions

Corvette
Looking for a Used Corvette in your area?
CarGurus has 10,786 nationwide Corvette listings starting at $3,900.
ZIP:

Search Chevrolet Corvette Questions

Chevrolet Corvette Experts

#1 carGrrl
carGrrl
Reputation 870
#2 Tom Demyan
Tom Demyan
Reputation 760
#3 califcarson
califcarson
Reputation 560
View All

Related Models For Sale

Used Chevrolet Camaro"
593 Great Deals out of 28,177 listings starting at $1,795
Used Ford Mustang"
1,046 Great Deals out of 25,221 listings starting at $1,329
Used Porsche 911"
145 Great Deals out of 3,216 listings starting at $12,995
Used Dodge Viper"
5 Great Deals out of 255 listings starting at $19,488
Used Mercedes-Benz SL-Class"
106 Great Deals out of 2,496 listings starting at $4,250
Used BMW 3 Series"
1,113 Great Deals out of 36,873 listings starting at $1,200
Used BMW M3"
101 Great Deals out of 1,389 listings starting at $4,991
Used Porsche Boxster"
83 Great Deals out of 1,672 listings starting at $5,000
Used Jeep Wrangler"
959 Great Deals out of 44,750 listings starting at $1,800
Used Ford Mustang SVT Cobra"
15 Great Deals out of 282 listings starting at $5,500

Used Cars For Sale

2014 Chevrolet Corvette For Sale
28 Great Deals out of 1,522 listings starting at $51,995
2013 Chevrolet Corvette For Sale
16 Great Deals out of 369 listings starting at $31,999
2012 Chevrolet Corvette For Sale
13 Great Deals out of 288 listings starting at $32,995
2011 Chevrolet Corvette For Sale
11 Great Deals out of 312 listings starting at $25,995