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Old Nov 6, 2007 | 12:14 AM
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Default SLP dual dual

On SLPonline.com under the restoration for camaros and firebird link they sell and muffler known as the "quiet" program muffler.

It states that muffler would be a great "replacement and/or spare" muffler.

My question is...

Is this the same muffler that the SLP Dual/Dual system used?

http://www.slponline.com/view_product.asp?P=10572
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Old Nov 6, 2007 | 01:03 AM
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From the link:

This is the original 2001-02 Camaro SS/Firehawk "quiet" program muffler. Makes a great replacement or spare for your original SLP dual/dual exhaust system. Muffler measures 3" in and dual 2 ½" outlets.
In short, my guess would be YES, this is a Dual/Dual muffler. Good find. $139.95 isn't a bad price either considering the price of the original SLP Dual/Dual exhaust. I think it was in the ~$600 price range.
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Old Nov 6, 2007 | 11:38 AM
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Im gonna give SLP a call today and make sure...but that was my guess as well.
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Old Nov 6, 2007 | 11:43 AM
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Just got off the phone with SLP...This muffler is NOT the same muffler as used in the Dual/Dual exhaust system.

This muffler is considerably more quiet explained by the sales rep from SLP.
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Old Nov 6, 2007 | 10:48 PM
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thats the SLP installed dual/dual muffler. if u bought a ss or firehawk new with the slp exhaust thats the muffler it came with. if u bought the d/d from new from slp it was called the powerflo system(almost the same but louder muffler) i'm actually looking for a powerflo muffler or complete system right now. i have a factory d/d
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Old Nov 6, 2007 | 11:18 PM
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Originally Posted by pir7tr
Just got off the phone with SLP...This muffler is NOT the same muffler as used in the Dual/Dual exhaust system.

This muffler is considerably more quiet explained by the sales rep from SLP.
I think he's mistaken. You can't really get any quieter than the Dual/Dual muffler without sacrificing flow. I think what he's talking about is the "cone of silence." The factory-installed Dual/Dual exhaust had a plate in one of the tailpipes exiting the muffer. It shrunk the flow down to something like an inch of pipe and it was done because the exhaust was deemed too loud without it on drive-by dB testing.

The aftermarket catbacks DID NOT have the "cone of silence," giving them "a more powerful tone," but still used the same muffler, which is this one. I think he's confusing the factory catback with the catback bought directly from SLP - but it was still the same muffler.

That's my guess.
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Old Nov 7, 2007 | 12:10 AM
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Oh yeah i keep forgetting to check to see if i have that damned cone. lol
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Old Nov 7, 2007 | 04:19 AM
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The ole cone of silence...lol
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Old Nov 7, 2007 | 04:15 PM
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I have thought about this as well after reading about that flow reducer...still debating on ordering one though...I might have to give it a shot.. its only $140 bucks
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Old Nov 7, 2007 | 04:57 PM
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Originally Posted by orangeapeel
The ole cone of silence...lol
For some reason I thought this was funny
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Old Nov 7, 2007 | 08:04 PM
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original muffler was called 'power flow'... i've never heard of this 'quiet program' mumbo jumbo.
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Old Nov 7, 2007 | 08:05 PM
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Originally Posted by silverLSWON
thats the SLP installed dual/dual muffler. if u bought a ss or firehawk new with the slp exhaust thats the muffler it came with. if u bought the d/d from new from slp it was called the powerflo system(almost the same but louder muffler) i'm actually looking for a powerflo muffler or complete system right now. i have a factory d/d

This man is correct. The dual dual optioned LS1 cars never came with the "cone of silence" anyways.
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Old Nov 7, 2007 | 08:57 PM
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Originally Posted by BackinBlack02SS
This man is correct. The dual dual optioned LS1 cars never came with the "cone of silence" anyways.
Yes they did...the catback by itself was too loud as per GM's specification, so they added the cone of silence to the factory-equipped dual/dual cars. The aftermarket dual/dual DID NOT come with the cone. It was louder, and AFAIK called "Powerflo."
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Old Nov 7, 2007 | 09:07 PM
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Originally Posted by ChocoTaco369
Yes they did...the catback by itself was too loud as per GM's specification, so they added the cone of silence to the factory-equipped dual/dual cars. The aftermarket dual/dual DID NOT come with the cone. It was louder, and AFAIK called "Powerflo."
No they did not. The cone of silence was only found in the LT1
2OTL exhaust and maybe some 98 SLP vehicles. The Powerflo muffler was internally different than the stock dual/dual muffler.

EDIT: Did anyone even bother to read the description on the SLP website? "This is the original 2001-02 Camaro SS/Firehawk "quiet" program muffler. Makes a great replacement or spare for your original SLP dual/dual exhaust system. Muffler measures 3" in and dual 2 ½" outlets."

Last edited by BackinBlack02SS; Nov 7, 2007 at 09:17 PM.
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Old Nov 7, 2007 | 10:43 PM
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yeah the cone was in the piping leading to the tips... how can only the muffler have the cone?
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Old Nov 20, 2007 | 06:41 PM
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SOME d/d mufflers had the RING of silence in the driver side tail pipe whare it bolts to the muffler. but the power flo muffler was different than the d/d muffler. i called slp and asked them. the powerflo muffler is an updated(louder version) of the dual/dual. the ring ust mad the d/d muffler even quieter
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Old Nov 20, 2007 | 09:36 PM
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Wow. Some misconception here for sure. Some factory D/D's ahd them (Mine included). I removed it a few years back and this is how the ring of silence looks like:

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Old Nov 21, 2007 | 12:24 PM
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Warp, did it make your car much louder? I would like to know if mine has it but I really don't feel like taking the exhaust off just to see. Was it difficult to remove?
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Old Nov 21, 2007 | 07:10 PM
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Originally Posted by RedRocketZ28
Warp, did it make your car much louder? I would like to know if mine has it but I really don't feel like taking the exhaust off just to see. Was it difficult to remove?

Exhaust tone changed slightly to a deeper sound.

Check with a coat hanger to see if there is blockage.

Here ia where you have to cut:

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