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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 05-02-2010, 04:44 PM   #1
Merlin
 
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Quieter system than stock mufflers with LT's?

Anyone have any luck with anything quieter than the stock mufflers with LT's? I installed the Kook's 1-7/8" long tubes with cats and left the stock catback in place. I love the sound under part throttle and cruising because there is absolutely zero drone but when I floor it, it sounds like glasspacks on a truck to me. I was wondering if anyone is running long tubes with the Dynomax catback - it seems quiet from their sound clip. Or is anyone running another catback that is actually quieter than the stock?
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Old 05-02-2010, 05:05 PM   #2
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Magnaflow Street 2.5 Catback. That's about as quiet as it gets. You'll get a beautiful sound at WOT and a quiet cruise.

I honestly don't know of any catback exhaust that is quieter than the Magnaflow Street 2.5 catback.

I have Kook's 1 7/8 Headers and Magaflow Street 2.5 catback and I love the sound.


Without Longtubes the Magnaflow Street is ridiculously quiet.

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Old 05-02-2010, 06:14 PM   #3
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Thanks, hey do you get any drone - I absolutely despise drone, it drives me crazy. And would the street axle-back be as quiet as the entire street cat-back or no?
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Old 05-02-2010, 08:44 PM   #4
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Quote:
Originally Posted by SGOS252382 View Post
Magnaflow Street 2.5 Catback. That's about as quiet as it gets. You'll get a beautiful sound at WOT and a quiet cruise.

I honestly don't know of any catback exhaust that is quieter than the Magnaflow Street 2.5 catback.

I have Kook's 1 7/8 Headers and Magaflow Street 2.5 catback and I love the sound.


Without Longtubes the Magnaflow Street is ridiculously quiet.

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Old 05-02-2010, 09:23 PM   #5
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Quote:
Originally Posted by SGOS252382 View Post
Magnaflow Street 2.5 Catback. That's about as quiet as it gets. You'll get a beautiful sound at WOT and a quiet cruise.

I honestly don't know of any catback exhaust that is quieter than the Magnaflow Street 2.5 catback.

I have Kook's 1 7/8 Headers and Magaflow Street 2.5 catback and I love the sound.


Without Longtubes the Magnaflow Street is ridiculously quiet.

As a secondary question. Have you heard this system in 3" with catback?
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Old 05-03-2010, 07:00 AM   #6
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I have 1 3/4 Dynatech's with HF cats, OEM H-pipes and 2 1/2 Magnaflow street axle back and it is very tame. From my Kooks LT's and Corsa cat back on my SRT8 jeep this set up is down right quiet. I know the comparison is apples to oranges, but my current set up is perfect for a conservative DD.

Edit, and she made 412 whp...
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Old 05-03-2010, 05:22 PM   #7
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Quote:
Originally Posted by Merlin View Post
Thanks, hey do you get any drone - I absolutely despise drone, it drives me crazy. And would the street axle-back be as quiet as the entire street cat-back or no?
I don't think the axle back will be as quiet as the full catback. The full catback has the two mufflers plus the resonated X pipe.

About drone. The only drone I get (I call it drone because its a consant noise) is up close to 80-85 mph (A6) or so and its not bad at all.

At normal cruise speeds (55-75 mph with the cruise control on) I don't notice any drone (its pretty quiet).
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Old 05-03-2010, 05:26 PM   #8
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As a secondary question. Have you heard this system in 3" with catback?
I don't believe Magnaflow has this exact setup (2 mufflers combined with a resonated X pipe) in a 3'' catback.
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Old 05-03-2010, 06:09 PM   #9
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I'm putting a Borla Touring exhaust on with my Kooks LT catted headers next week. I also don't want to be too loud. I'll let you know how that sounds after it's installed.
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Old 05-04-2010, 02:04 PM   #10
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Quote:
Originally Posted by SGOS252382 View Post
Magnaflow Street 2.5 Catback. That's about as quiet as it gets. You'll get a beautiful sound at WOT and a quiet cruise.

I honestly don't know of any catback exhaust that is quieter than the Magnaflow Street 2.5 catback.

I have Kook's 1 7/8 Headers and Magaflow Street 2.5 catback and I love the sound.


Without Longtubes the Magnaflow Street is ridiculously quiet.

I put this on and it was ridiculous quiet. It wasn't quieter than stock though.

I put on a true xpipe, and now it resembles the 16583 i think.

If the stock is too loud, I don't know what to tell you.
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Old 05-05-2010, 09:43 AM   #11
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I put this on and it was ridiculous quiet. It wasn't quieter than stock though.

I put on a true xpipe, and now it resembles the 16583 i think.

If the stock is too loud, I don't know what to tell you.

Thanks for all the replies. The stock exhaust would be perfect but it's just when I floor it, it sounds like it has glass packs and pops a lot (not talking about the decel popping here) - it's a great tone, just not clean. Not really that it is too loud - I could deal with the sound level if it was a smooth, clean tone. And under normal driving I can hardly hear it and highway speeds it is super quiet. Hard to explain it, but that is the best I can do. Just needs a little refinement now to account for the headers opening everything up.
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Old 05-05-2010, 10:49 AM   #12
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Quote:
Originally Posted by Merlin View Post
Thanks for all the replies. The stock exhaust would be perfect but it's just when I floor it, it sounds like it has glass packs and pops a lot (not talking about the decel popping here) - it's a great tone, just not clean. Not really that it is too loud - I could deal with the sound level if it was a smooth, clean tone. And under normal driving I can hardly hear it and highway speeds it is super quiet. Hard to explain it, but that is the best I can do. Just needs a little refinement now to account for the headers opening everything up.
Then the 16579 is what you need.
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