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

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Old 02-09-2011, 11:23 AM   #1
retired motorcop
 
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EXHAUST OPINION

I have an L99/A6. I currently have a CAI and GMPP off-road axle back. I want to get a deep muscle car sound but not too loud and obnoxious inside. What would sound better? 1) Leaving as is? or 2) Adding LT's and putting the stock muffler back on? or 3) Adding LT's and leaving the GMPP off-road on?

Or going with a cat-back system? Flowmaster?

Last edited by retired motorcop; 02-09-2011 at 12:01 PM. Reason: additional choice
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Old 02-09-2011, 12:27 PM   #2
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Option two will sound the best for the A6. For what you are looking at anyway.



Here is video with LT's and stock exhaust.
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Old 02-09-2011, 06:31 PM   #3
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Thanks CamaroCowboy!
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Old 02-09-2011, 06:46 PM   #4
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if i were you ill go with #3
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Old 02-09-2011, 06:49 PM   #5
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go with 3.
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Old 02-09-2011, 08:28 PM   #6
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go with 3.
I agree. Louder the better.
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Old 02-09-2011, 09:16 PM   #7
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I had a CAI and GMPP off-road axle back and then added the Edelbrock X-pipe along with a tune to disable the AFM. It was a great sounding exhaust.

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Old 02-09-2011, 11:11 PM   #8
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I agree. Louder the better.
its not even being louder. its also the GMPP will have a better tone
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Old 02-09-2011, 11:24 PM   #9
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LT's for sure
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Old 02-09-2011, 11:41 PM   #10
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3
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Old 02-10-2011, 05:34 AM   #11
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ARH HEADERS AND CORSA EXHAUST
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Old 02-10-2011, 05:44 AM   #12
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if i were you ill go with #3
sorry i forget to tell you your axle back is fine but when you r ready to buy
the long tube buy it with x-pipe
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Old 02-10-2011, 07:05 AM   #13
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straight pipes and LT headers
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Old 02-10-2011, 07:20 AM   #14
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Quote:
Originally Posted by retired motorcop View Post
I have an L99/A6. I currently have a CAI and GMPP off-road axle back. I want to get a deep muscle car sound but not too loud and obnoxious inside. What would sound better? 1) Leaving as is? or 2) Adding LT's and putting the stock muffler back on? or 3) Adding LT's and leaving the GMPP off-road on?

Or going with a cat-back system? Flowmaster?
I would add the LT with high flow cats as a first step. Then guage the sound and go from there you may be happy and if not you could always sell you axle-back and move to another system. The stock cat back is heavy and the rear mufflers are ugly. If you do go with the stock catback you should ditch the factor muffler and add a set of polished magnaflow magpacks.
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Old 02-10-2011, 08:20 AM   #15
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I have the GMPP exhaust system and the sound is outstanding inside and out. It sound like a good performance car.
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Old 02-10-2011, 08:29 AM   #16
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He said he didn't want super loud. That is why I said two is better out of his options.
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Old 02-10-2011, 09:17 AM   #17
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I have the same question. I also have the GMPP axel back. I also do not want it too loud, but want more of a deep tone, and just a bit more when I am under hard throttle. I will be watching this thread close. I want to do this upgrade in the next couple months.
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Old 02-10-2011, 09:26 AM   #18
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I have a Corsa cat back, and have been considering headers. Right now I have zero drone cruising. If I went with headers, I'd consider putting the stock exhaust back on, and painting those ugly ass, garbage can mufflers with high temp black paint. Reason being, I've heard that the Corsa cat back is extremely loud with LT headers.
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Old 02-10-2011, 09:29 AM   #19
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Quote:
Originally Posted by CamaroCowboy View Post
Option two will sound the best for the A6. For what you are looking at anyway.



Here is video with LT's and stock exhaust.
Sounds awesome, bro! I like the "OBX hater" jab, at the end.
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Old 02-10-2011, 10:47 AM   #20
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You'd be doing yourself an injustice if you did not first check out the Stainless Works Retro Chambered Cat Back....
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Old 02-10-2011, 10:54 AM   #21
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I love that system also but with LT's even Apex says it will be holy crap loud
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Old 02-10-2011, 04:48 PM   #22
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Quote:
Originally Posted by CamaroCowboy View Post
Option two will sound the best for the A6. For what you are looking at anyway.



Here is video with LT's and stock exhaust.
Im surprised at how well that actually sounds with the stock mufflers

Quote:
Originally Posted by Snake Slayer View Post
I would add the LT with high flow cats as a first step. Then guage the sound and go from there you may be happy and if not you could always sell you axle-back and move to another system. The stock cat back is heavy and the rear mufflers are ugly. If you do go with the stock catback you should ditch the factor muffler and add a set of polished magnaflow magpacks.
That is a really good idea and I would do that first. Give it a shot with the GMPP exhaust and see how you like it. If it is too loud and you want to go with a catback, go with something quieter such as a Magnaflow street catback that has a muffler and a resonator.

Quote:
Originally Posted by mikey8 View Post
I have a Corsa cat back, and have been considering headers. Right now I have zero drone cruising. If I went with headers, I'd consider putting the stock exhaust back on, and painting those ugly ass, garbage can mufflers with high temp black paint. Reason being, I've heard that the Corsa cat back is extremely loud with LT headers.
I had a Corsa sport catback with ARH headers on my 06 GTO. It was LOUD when I got on it but quiet with zero drone while cruising.

Also if you have any questions with headers, don't hesitate to shoot me a PM. A set of ARH headers will pick you up the most amount of "bolt on" power you can get.
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