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Old 03-25-2011, 08:07 AM   #15
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I searched for 1386 and can't find it
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Old 03-25-2011, 09:33 AM   #16
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Just came back from dealer, the exhaust was hitting and needed to be adjusted. The tech and I took it out after he worked on it and the noise was gone. Hopefully it doesnt come back.
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Old 03-25-2011, 09:59 AM   #17
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Originally Posted by Jcobra View Post
Just came back from dealer, the exhaust was hitting and needed to be adjusted. The tech and I took it out after he worked on it and the noise was gone. Hopefully it doesnt come back.
What part of the exhaust was hitting??? and what was it hitting on ???? Think that'll help out other C5 members.
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Old 03-25-2011, 10:14 AM   #18
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The tech said it was in the back and after he adjusted the hangers it stopped. It was doing it before I put the axle back on just not as noticable. It was reverberating throughout the whole system. I was hoping he would have shown me where and what they did but it was really busy there. As long as it doesn't come back im happy. He said if it does just bring it back.
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Old 03-25-2011, 10:56 AM   #19
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I searched for 1386 and can't find it
My bad....14386

http://www.magnaflow.com/02product/d...rtnumber=14386
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Old 03-25-2011, 11:18 AM   #20
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Which system comp cat-back do you have? The 2.5" Comp cat-back should basically be a muffler delete and resonated x-pipe. You should definately hear that. Not that it's real loud but should make a noticable difference.
I have the 2.5" competition (the muffler delete) even my dealership who did the install said he thought it would be louder.

The only problem I have with getting headers is I don't want to get a tune for warranty issues and I hear your undoubtedly going to get a check engine light if you put in headers

I'm also hearing some rattling just had the exhaust done 2 days ago and yesterday was the first day I drove it and it's pretty noticeable. called my dealership and I'm taking the car in Monday
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Old 03-25-2011, 11:29 AM   #21
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Originally Posted by Jcobra View Post
The tech said it was in the back and after he adjusted the hangers it stopped. It was doing it before I put the axle back on just not as noticable. It was reverberating throughout the whole system. I was hoping he would have shown me where and what they did but it was really busy there. As long as it doesn't come back im happy. He said if it does just bring it back.
Thanks a bunch....The reverberation you're mention is probably what everyone has been experiencing. Haven't had one peep since I cut out the stock mufflers and installed the Borla axleback.
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Old 03-25-2011, 12:22 PM   #22
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Honestly....I had bascically the 2.5" comp cat-back for a while. At first it seemed loud enough but eventually I though was a little on the quiet side unless you were WOT.

I've since changed to the headers with the 3" Comp which has the street mufflers on it. Still I wouldn't mind it a little louder but I'm good with it as it is.

One thing you might look at is adding some Hf Cats. Ones like JBA or SOLO have. Should give you good power, more sound, no tuning, and no Check Engine Light. Do a search on them. Not as good as LT headers but will probably be a good option for your situation.
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Old 03-25-2011, 01:05 PM   #23
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Spoke too soon. I'm back at the dealer, noise is back.
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Old 03-25-2011, 10:17 PM   #24
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I installed the Magnaflow cat-back system (16580) about 3 weeks ago. It's not as loud as I expected at idle, but it sounds a lot better than the factory setup. When you get on it, WOW!!!!!!!! Also, it's almost 50 lbs lighter due to removing the old mufflers.
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Old 03-26-2011, 01:10 AM   #25
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Originally Posted by Jabs View Post
I have the 2.5" competition (the muffler delete) even my dealership who did the install said he thought it would be louder.

The only problem I have with getting headers is I don't want to get a tune for warranty issues and I hear your undoubtedly going to get a check engine light if you put in headers

I'm also hearing some rattling just had the exhaust done 2 days ago and yesterday was the first day I drove it and it's pretty noticeable. called my dealership and I'm taking the car in Monday
ya man, any cat back out there doesn't really do the trick its the dam stock cats that are cock blocking your car.
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Old 03-26-2011, 09:01 AM   #26
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If the cats are removed will the car pass NY state inspection?
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Old 03-26-2011, 10:40 AM   #27
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ya man, any cat back out there doesn't really do the trick its the dam stock cats that are cock blocking your car.
Ya maybe like Caverman said I'll add some HF Cats.

A bunch of friends told me to remove the resonators from the X-Pipe? Might be too loud then?

Dealership said to get SLP headers and they wouldnt void warranty. When I told them I was sure to get an engine light they said that shouldn't happen. But I know it will!

JCobra any updates? I'm taking mine in Monday for the rattling
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Old 03-26-2011, 10:41 AM   #28
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If the cats are removed will the car pass NY state inspection?
Don't know bout new York but it wont in VA. Just call a local muffler or inspection shop.
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