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Exhaust tone change

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Old Jun 30, 2009 | 02:32 PM
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Default Exhaust tone change

Hey everyone, I just started having an issue with my ls1 z28 a few days ago. I have had the same exhaust setup on my car for about 4 years now, its a flowmaster american thunder cat back exhaust with the 80 series crossflow muffler. The other day I started it up and the exhaust tone now soundsvery different than it has before. Noticeably higher pitched as opposed to the normal deep rumble. If i didnt know any better Id say someone switched my flowmaster out with a magnaflow in the middle of the night.

What could be the possible cause of the change in pitch of the exhaust? If any one can give me any clues I would appreciate it!
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Old Jun 30, 2009 | 06:02 PM
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Get under the car and check it out. Sounds like you might have a hole somewhere.
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Old Jul 1, 2009 | 02:26 PM
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Thank you for the advice, I got under the car today to check and sure enough theres a hole about the size of a nickel in the downpipe I believe (not really sure, kinda a newbie to car terminology). Looks like Id better start looking for a replacement.
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Old Jul 1, 2009 | 02:38 PM
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I would say replace that 80's series. The 80's series flow is terrible! But I'm glad you found the problem.
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Old Jul 1, 2009 | 02:46 PM
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Is it possible to seal up the hole somehow, or will I have to get a new pipe?
Also what muffler would you recommend? The 80 series was on the car when i bought it, but I personally think it sounds way too mellow for my tastes.
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Old Jul 1, 2009 | 02:48 PM
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Borla is my favorite because you can tune the exhaust to you liking and it sounds bitchin! Failing you dont have $800 for a system I think LM2 with stock manifolds if you still have them sounds real nice.
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Old Jul 1, 2009 | 02:56 PM
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you can buy some stuff at parts stores to seal it up... or at least it says it will seal it up, but i don't know how well it works...
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Old Jul 1, 2009 | 02:58 PM
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moroso spiral flow mufflers
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Old Jul 1, 2009 | 03:09 PM
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Ill definitely have to do some shopping around. Sadly, cause of the economy im on a budget but I really want something eventually that's affordable yet better than the flowmaster setup. I used to think highly of the flowmaster setup but after doing some research on it I guess its not nearly as good as the competition.
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