I was wondering if dynomax is about the quietest performance muffler that I am going to get, or is there anything out there quieter?

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Black 89 IROC...Mods: 355, 10.5:1 comp, Big Solid Crower Cam, TFS heads, Victor Jr, Holley, and a 5 spd...12.90 @ 112.5 with a 2.3 60ft time on BFG radial TA's

 

Dynomax is about it, man. Unless you want quieter, then go stock, but that is not a performance muffler. I have the Dynomax and am preety happy with it.

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1987 GTA 350,rebuilt in 1998. new heads, Heddman headers w/y-pipe, Dynomax cat-back system, 45,000 coil, accel plug wires and cap&rotor, k&n, b&m shift kit and trans cooler, modified mass airflow sensor, manual fans switch. MSD 6A yet to be installed. No time slip.

1993 Bonneville SSE ALL STOCK. 98,xxx miles and stil counting...plan to install K&N and Flowmaster 80 series

 

I'll second that.

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1990 IROC 350
Mods: Too busy trying to make it run right to mod it.
Airfoil, Dynomax cat-back, Accel coil, 180 t-stat, Bald Eagle tires,
Hypertech fan switch, Accel 23# injectors, Holley AFPR, ported plenum,
Ruger P95DC, hot wife, new oil filter, thick rubber floormats.
18.0 @ 85MPH since I'm one big-a$$ MF
"It's better to have and not need than to need and not have."

 

go to goravin.com. you can listen to the mufflers for yourself. the one available for our car is the quieter one. they also have a bar graph on performance. I priced one at $270 including labor and new 3" tail pipes. I plan to get it put on this summer. good luck.

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late model 91 rs
fully loaded t-tops
red leather
paint- gm red and yellow blend (light red)
custom pink rims
305 tbi k&n,computer chip
MTX sub and amp (very loud)
vic_v8@yahoo.com

 

Just installed a Hooker Aerochamber on my 88GTA 5.7 and am very happy. It is actually pretty quiet till you get on it. It was like 79.00 at jegs. 21/2" ID in and 2 x 21/4" ID outs.