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ABSOLUTE quietest muffler that flows the best

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Old 04-15-2005, 10:52 AM
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what company makes ultraflo again?
Old 04-15-2005, 11:17 AM
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Dynomax makes ultraflos.
Old 04-15-2005, 12:33 PM
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I have magnaflow and no one has ever told me my car is quiet. Maybe if you are running cats, but that quiets everything down.
Old 04-15-2005, 03:42 PM
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Originally Posted by NOTFAST
ive heard magnaflow? ive heard hooker, ive heard dynomax

so anyone have anything that they wanna add
Stock is quiet!

I have the Hooker, and it's not too loud, but it ain't stock.
Old 04-15-2005, 05:36 PM
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I have not heard many others and have the hooker. It got very loud after adding headers and cam. I ended up adding bullets in the tailpipes to make it quiet enough for daily driving. And yes, I do have cats.

If I were to change I may go with the dual/dual. I posted on this before and got good responses on the dual/dual.

I also have the quad CME(center mount exhaust), which may make it louder??

My setup without the bullets may be perfect for many others. It was louder than I wanted. With stock manifolds the hooker sounded perfect.

LS1 sounds is great but you need to hear them in person to really know.

Good Luck!!
Old 04-15-2005, 08:03 PM
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Originally Posted by Diolar Magnum
magnaflow is one of the quietest?
I'm confused also..I otta post a sound clip

magnaflow is quiet at idle and thats it..Mine roars through the powerband
Old 04-15-2005, 10:16 PM
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I own a Hooker and no way is it the quietest muffler, neither is the Magnaflow. The SLP is the quietest of the three. I should mention this is on a heads/cam car.
Old 04-19-2005, 03:07 PM
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Also not much rasp from the SLP D&D with the mods in my sig.
Old 04-19-2005, 03:19 PM
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The magnaflow catback uses a small crossflow muffler. If you use the dynomax 3" ipipe and go with a 1oftl style catback and use a much bigger magnaflow muffler. It wont be so loud and less raspy. It should flow just as good.
Old 04-19-2005, 05:03 PM
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Originally Posted by 382WS6
Borla is the quietest system I've heard so far. Even at WOT it's not that loud.
Wow, you'd better listen to some other catbacks then....


The SLP Dual-dual muffler is by far the quietest muffler out there without compromising flow. I've heard it on a large cammed engine with LTs and an ORY and it was just barely louder than stock at idle. Even when you revved it, it still was not loud at all.

Here's a clip of it on an LS1 with LTs and a catted Y (but with an ORY like I've heard, it wasn't noticeably louder at all:
http://ls1sounds.com/SLPdual-dual/SL...edY_01Hawk.avi
Old 04-19-2005, 05:12 PM
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I cant believe no one has suggested a Twister muffler. GREATLY reduces sound especially popping and resonance. Cheap and effective.
Old 04-19-2005, 07:25 PM
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My Hooker was really quiet at idle and really loud at WOT. I wouldn't pick it if you want something really quiet.
Old 04-19-2005, 07:49 PM
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Magnaflow is NOT quiet by any means, and is loud as **** without cats. sounds great though
Old 04-19-2005, 07:59 PM
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Originally Posted by 240M3SRT
I cant believe no one has suggested a Twister muffler. GREATLY reduces sound especially popping and resonance. Cheap and effective.
But how does it flow and do you have more info?
Old 04-19-2005, 09:24 PM
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Originally Posted by DrkPhx
But how does it flow and do you have more info?
We use them on our turbo SRT-4 exhaust as you know you want zero backpressure with turbo cars. Im sure you could search google or something. Theres an expensive brand by Edelbrok or some bigname company like that then theres the more affordable "twister". Its about $50 and has an auger going down the middle you would swear its restrictive but its pretty freeflowing when we dynoed it.
Old 04-19-2005, 10:34 PM
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You have to look into the ATR Pitbull!!! I ran this on my car for a long time till some animal hit it and cracked it. It was very mild, and it is stright through!!! literally... it flows within 99.9% of a straight pipe, but it is not loud at all..... until u floor it. When you floor it... you can definitely tell it flows straight through. It is sweet as hell, I wished there was a soundclip of it, but do a search for ATR PITBULL, there is a pic on here with a guy holding up the muffler, you see straight through to the other side. Check them out.
Old 04-20-2005, 02:50 AM
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i have flo-pro twisters and they are very quiet to me...esp. goin from ory/lm to duals and flo-pro's
Old 04-20-2005, 03:25 AM
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Hooker
Old 04-20-2005, 03:36 AM
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I have SLP dual dual with LT's and an ORY and it sounds quiet as can be untill I get on it.
Old 04-20-2005, 09:53 AM
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slp dual dual,is tough to beat i had a hooker and it was to dang loud



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