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Old Feb 9, 2011 | 06:09 PM
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Default catback exhaust

I am looking to replace the stock exhaust on an 05 C6 and want something the sounds great but isn't too loud.

any recommendations?

looked online at the SLP loudmouth II & liked the sound but think it may be to loud

anyone have this or know where to find reviews on it
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Old Feb 9, 2011 | 06:56 PM
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This is a thread that comes up almost daily. There are so many options that it will make you nuts. I can tell you that if you want a great product, go with B & B Fusions. Load when you want, quiet when you want. Like NPP's or Z06.
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Old Feb 9, 2011 | 07:56 PM
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MN6 or AT?
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Old Feb 9, 2011 | 08:36 PM
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mn6
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Old Feb 10, 2011 | 09:30 AM
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Originally Posted by psgrass
I am looking to replace the stock exhaust on an 05 C6 and want something the sounds great but isn't too loud.

any recommendations?

looked online at the SLP loudmouth II & liked the sound but think it may be to loud

anyone have this or know where to find reviews on it
I have a Loudmouth l for sale @ $650.00 shipped free in US
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Old Feb 10, 2011 | 09:47 AM
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Be sure you get a CAT-BACK if that's what you want, most of what you see advertized is really an axle-back. To be a true Cat-Back it has to include a mid pipe, if there is no mid pipe it's an axle-back.
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Old Feb 10, 2011 | 11:09 AM
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Borla I just install are loud and good sounding exhaust IMHO
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Old Feb 10, 2011 | 03:10 PM
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There are several systems out there, but if you decide you do not want drone, then you are limited to the Corsa Sport, an OEM Z06 or NPP Bi-Mode system, or the B&B Fusion Bi-Mode exhaust.

I disagree with haljenson. Almost all C6 exhaust systems are axle back systems. Some manufacturers sell a new mid pipe with resonators (like the Corsa Touring), but if you decide to add headers this expensive mid pipe must be replaced by a matching mid pipe from the header manufacturer and you have wasted your money.

Additionally, these exhaust systems do not add horsepower, only more or less sound.

Last edited by Vito.A; Feb 10, 2011 at 03:13 PM.
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Old Feb 10, 2011 | 03:36 PM
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Since you have a M6 then there's no choice. GHL's street series. They look and sound great...that's if you like a nice deep rumble, low price and great looking tips. That's my 2 cents..
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Old Feb 10, 2011 | 07:12 PM
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Originally Posted by Vito.A
There are several systems out there, but if you decide you do not want drone, then you are limited to the Corsa Sport, an OEM Z06 or NPP Bi-Mode system, or the B&B Fusion Bi-Mode exhaust.
Or a variety of other exhaust options. My Borla Multicore added zero drone. It provides an exterior sound between touring and sport systems. I have an A4 with 2.73s.

OP - Go listen to a variety of systems in person and don't listen to me or anyone else on here; all opinions.
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Old Feb 11, 2011 | 12:14 AM
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Default Borla milti-core

Originally Posted by BowTieBlood
Or a variety of other exhaust options. My Borla Multicore added zero drone. It provides an exterior sound between touring and sport systems. I have an A4 with 2.73s.

OP - Go listen to a variety of systems in person and don't listen to me or anyone else on here; all opinions.

Did you install the x-pipe with your multi-core? I did not. The resonance between 1400 and 1700 is just too much. Installed venturis. Not much difference. Looking for someone to swap for touring.
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Old Feb 11, 2011 | 12:30 AM
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Originally Posted by twc6
Did you install the x-pipe with your multi-core? I did not. The resonance between 1400 and 1700 is just too much. Installed venturis. Not much difference. Looking for someone to swap for touring.
When I purchased it, an x-pipe was only available with the Z06 model (3"). I know it's more readily available now, but do you have the 2.5" or 3"? That could definitely cause a difference. Are you otherwise stock?
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Old Feb 13, 2011 | 09:09 PM
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2.5". All stock except for the Multi-core rear section. I considered the x-pipe which is available but was not sure how the multi-core would sound so wanted to limit the financial risk. The x-pipe is another $500 on top of the $1500+ for the rear section. This system has a great sound, but peaks between 1400 and 1700 RPM which pretty much covers 65-80MPH. Wish I had been more conservative and gone for the touring system. Like to find someone who has that and wants more sound---would make a great trade.
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Old Feb 13, 2011 | 09:16 PM
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Corsa Sport Exhaust!
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Old Feb 13, 2011 | 11:52 PM
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I went with the Corsa Sport with the 4" tips, axle back. I read somewhere if you add the X pipe, its quieter. Here is a video of the difference between stock and sport. Trust me, you'll love the sport exhaust. No drone! I just wish it would stop raining here in the northwest!
http://www.youtube.com/watch?v=U-SGo4IA0Ko
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