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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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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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