Mufflers -85 C4
Thread Starter
Instructor
Joined: Oct 2002
Posts: 103
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From: Crestwood Mo
Mufflers -85 C4
I'm looking to purchase a set of quiet after market mufflers. I've read many articles concerning low interior resonance, aggressive sound, etc., more articles on Flowmaster,Borla,Hooker, Thrush, with little personal input. I know, if you can't stand the roar buy stock....however, I would appreciate
some info from those who know.....or have heard for certain.
Thanks
some info from those who know.....or have heard for certain.
Thanks
Team Owner
Joined: Sep 2001
Posts: 62,154
Likes: 1,731
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Mufflers -85 C4 (62k)
all of them have their own sound, you would probably need to hear each yourself inside the car to make a good decision
but almost all of them have some degree of resonance
I like Power Effects the most, you can adjust the sound, I'm halfway to having the money for a new set for mine.
but almost all of them have some degree of resonance
I like Power Effects the most, you can adjust the sound, I'm halfway to having the money for a new set for mine.
Instructor
Joined: Jun 2003
Posts: 187
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From: Orange Park Fl
Re: Mufflers -85 C4 (62k)
Left my Flowmasters on the floor of the muffler shop. Installed a set of Dynomax reproduction mufflers with "quite flow" technology, from Eckler's on my 86. (Found out later I could have saved about $80 shopping around.) Anyway, Now I can hear myself think and hold a conversation without shouting while driving at 60mph. :lol:
Race Director
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
Re: Mufflers -85 C4 (Kens86)
Left my Flowmasters on the floor of the muffler shop. Installed a set of Dynomax reproduction mufflers with "quite flow" technology, from Eckler's on my 86. (Found out later I could have saved about $80 shopping around.) Anyway, Now I can hear myself think and hold a conversation without shouting while driving at 60mph. :lol:
Dynomax is better than stock but not crazy loud!
Melting Slicks
Joined: Jun 2002
Posts: 2,168
Likes: 16
From: Phoenix AZ
Re: Mufflers -85 C4 (62k)
If you can find a good set off a '91 coupe at a wrecking/parts yard they used a larger muffler in '91 on coupes only that was less restrictive than '84-'90. GM considered them too loud for convertibles, though. I think the sound is perfect, NO resonance but a deep sound when accelerating. They are noticeably larger, but few people would notice the difference when installed on your car. That's what I did, and I'm very happy with them. I was at 20th st Auto in Phoenix yesterday and saw a good clean cat-back (y-pipe and mufflers) for a '91 there that could probably be had for less than $100.
