Exhaust TECH Mufflers, Headers and Pipes Issues

          
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Old 09-05-2025, 03:18 PM
Joog Joog is offline
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Default New exhaust. Paradox signature series?

Looking for new exhaust on a 67 firebird and 67 gp convertible. Both mild builds on long branche manifolds.

Anyone ever use the Paradox brand signature series mufflers? I’ve seen them on Chevys and they sound good, but nothing on a Pontiac. I’d like some feedback and possibly a few videos.

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Old 09-06-2025, 09:51 AM
78w72 78w72 is offline
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Never heard of them, have you considered the other popular brands like dynomax or pypes etc? Thats what most guys on here go with.

But looking at their website they have 3 pages of sound clips to listen to on cars, no pontiacs but since every motor is built different, one guys car/engine will sound different than another one built differently, so cant really tell what they will sound like on your cars.

https://paradoxmuffler.com/sound-examples/

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Old 09-06-2025, 10:54 AM
Cammer-6 Cammer-6 is offline
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On that note
What about spintech

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Old 09-06-2025, 12:09 PM
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They're basically a single chamber muffler in a bullet body. I'd have to imagine they'd sound pretty good.

Run em

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Old 09-06-2025, 01:51 PM
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Quote:
Originally Posted by 78w72 View Post
Never heard of them, have you considered the other popular brands like dynomax or pypes etc? Thats what most guys on here go with.

But looking at their website they have 3 pages of sound clips to listen to on cars, no pontiacs but since every motor is built different, one guys car/engine will sound different than another one built differently, so cant really tell what they will sound like on your cars.

https://paradoxmuffler.com/sound-examples/
Dynomax is on the table. I have super turbos on my truck with an H pipe and they sound good. But I’d want to change up the type of dynomax if I did it on something else.

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Old 09-06-2025, 01:54 PM
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Quote:
Originally Posted by 72projectbird View Post
They're basically a single chamber muffler in a bullet body. I'd have to imagine they'd sound pretty good.

Run em
Ive like them on the Chevys I’ve seen.

https://youtu.be/Ah1TssoOT6U?si=rMtXNnLEj28hvCHJ

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Old 09-06-2025, 02:08 PM
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Quote:
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Dynomax is on the table. I have super turbos on my truck with an H pipe and they sound good. But I’d want to change up the type of dynomax if I did it on something else.
Ultra-flo are the popular dynomax mufflers to use with higher power & will be louder than super turbos. If power is a concern over sound, the straight through style muffler of any brand with have the best flow, pypes race pro are the same straight through style.

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Old 09-06-2025, 02:10 PM
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Quote:
Originally Posted by 78w72 View Post
Ultra-flo are the popular dynomax mufflers to use with higher power & will be louder than super turbos. If power is a concern over sound, the straight through style muffler of any brand with have the best flow, pypes race pro are the same straight through style.
Power isn’t a concern. Just want to know what people with the signature series think and if there’s a video. Just like to test what’s all out there before going out and getting one

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Old 09-06-2025, 03:28 PM
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Quote:
Originally Posted by Joog View Post
Ive like them on the Chevys I’ve seen.

https://youtu.be/Ah1TssoOT6U?si=rMtXNnLEj28hvCHJ
They do sound good. Sounds similar to a Flowmaster 10, which is a single chamber in a rectangular body.

I love chambered mufflers. I'm more than willing to sacrifice a few hp for the sound compared to a true straight thru muffler.

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Old 09-06-2025, 03:34 PM
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A question is there drone at speed?

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Old 09-06-2025, 06:29 PM
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Joog video, I liked Dynomax better but that thick chug might not be what you want.

Borla Pro XS 3" are nice too.

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Old 09-06-2025, 08:21 PM
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Originally Posted by GOAT8U2 View Post
Joog video, I liked Dynomax better but that thick chug might not be what you want.

Borla Pro XS 3" are nice too.
I like both. Probably something deep for the gp with h pipe and the signature series for the firebird with x pipe

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Old 09-06-2025, 08:23 PM
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Quote:
Originally Posted by 72projectbird View Post
They do sound good. Sounds similar to a Flowmaster 10, which is a single chamber in a rectangular body.

I love chambered mufflers. I'm more than willing to sacrifice a few hp for the sound compared to a true straight thru muffler.
Yup I like the depth too. Got a set of dynomax super turbos on my truck

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Old 03-23-2026, 03:14 PM
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A question is there drone at speed?
No drone at all.

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Old 03-23-2026, 03:19 PM
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Tacked into the firebird. I’ll make sure to make a sound clip video soon. I have never heard these on a Pontiac before. Only Chevys and Mopars
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  #16  
Old 03-25-2026, 09:11 AM
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It is not a traditional straight through muffler, it has two half pipe shaped pieces that funnel exhaust gas into the baffling. This keeps the deep sound and no drone. They say at idle and acceleration it has a nice deep tone and when you're cruising it gets quiet.
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  #17  
Old 04-12-2026, 09:23 PM
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Took two very quick videos. The signature series are better than anticipated! I’ll never go back to a Flowcrapper or Magnaflow. I’ve never heard a Pontiac with the Paradox Signature Series ever. I’ll make a full video on the whole exhaust soon, X pipe with cutouts to these signature series.

Startup and idle:
https://youtu.be/EDpIQGyvy5c?si=6khUpqDmAg1kAWww

Few baby revs:
https://youtu.be/3n17jcedZIw?si=-nn4omROwqlNUGqf

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