My american thunder flowmaster cat back is losing my vote fast. It sounds friggin awesome, but its loud as a mother. I guess thats what you get w/400hp. I want the quietest thing i can get that flows as well as the flowmaster does. I heard dynomax blows, but im not sure. Anyone? Thanks..
-paul

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"Restore decency in America. Ban rice!!"
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Dynomax flows well but it gets a bad rep because the sound isn't that much different than stock and its cheap. People usualy associate cheap stuff with bad stuff.

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-Tas
'89 Formula WS-6

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

Soon to be installed:
Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248), Catco 3" cat, and injector spacer.

Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz

 

Yea, i have to agree, but i also heard of dynomax rusting out. A friend of mine just painted his muffler to prevent it (since we have salt, etc). Hasn't rusted yet...other than that, it sounds very stock.. Maybe tiny bit louder with a hint of a deeper rumble. IMHO The dynomax is waaaay quieter than the flowmaster....very very quiet and very stock sounding.

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89 IROC-Z 350 TPI

-Flowmaster Catback
-Performance Resource Chip
-700R4 (Rebuilt) Too much done to actually list
-K&N Airfilters
-Ported Plenum
-2.77 Gears (not much to brag about but eh, its there)
-MSD 8.5 mm plug wires
-Gutted cat
-!AIR
-Gutted Air Boxes

 

i have heard that BORLAs are quiet and everyone knows that they have the THE BEST flow ratings, i am working on getting a system for my car, and no i am not buying it new, its in the junkyard and they dont know it. they junkyard guy thought it was the stock exhaust, so i am gonna go and get it, he quoted me $50 for it, man you cant beat that!!

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Jarrad
1990 IROC-Z L98 350 TPI
TH-700R4
G92- 9 Bolt Borg-Warner 3.27gears
Bright Red Hardtop/ Grey "Custom" Interior
NOT STOCK, NO WHERE CLOSE!
NEW RED PAINT and WELD PROSTARS.

DAILY DRIVER: 1991 GREY S10 2.5L/5SPD -FOR SALE. leaving for army.

 

I have Dynomax, and i think it's pretty quiet. As they said just a little louder than stock, but you can't hear it at all at crusing speed. As for rusting out, mine's been on my car for a few years and looks fine.

 

whoever said borla is quiet needs their hearing checked ASAP.