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Old May 7, 2012 | 06:59 PM
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i have a 76 vette and just put corvette central exhaust on the shorty hedders 2.5 pipes with the magnaflow hide away mufflers oh and it doesnt have a cat on it true duels does anybody have this system on there car and can you tell me if the mufflers get louder after you put some miles on them i hope they do
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Old May 7, 2012 | 07:43 PM
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Nope. Magnaflows don't sound good on these stock engines. I have about 3,000 miles on my CC exhaust and I'm pretty sure the muffs are going to get replaced by Flowmasters sometime in the near future.
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Old May 7, 2012 | 08:04 PM
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Originally Posted by George Ries
i have a 76 vette and just put corvette central exhaust on the shorty hedders 2.5 pipes with the magnaflow hide away mufflers oh and it doesnt have a cat on it true duels does anybody have this system on there car and can you tell me if the mufflers get louder after you put some miles on them i hope they do
I'll trade you my Flowmasters for the Magnaflows.
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Old May 7, 2012 | 08:38 PM
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well its not stock but thanks for the bad news
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Old May 7, 2012 | 09:08 PM
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Originally Posted by AdamMeh
I'll trade you my Flowmasters for the Magnaflows.
Are they the 40's?

May take you up on that if they are in excellent shape like mine are.........
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Old May 7, 2012 | 09:34 PM
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No.. I was being sarcastic. They are old, painted black and welded on. I just don't like the sound of them.

Adam
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Old May 7, 2012 | 09:45 PM
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I have the same set up , SS Magna Flows and it sounds fine to me.
Are you looking to sound annoying?
To me , I tend to like more meaty sound over how loud it is.
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Old May 7, 2012 | 10:07 PM
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I must be getting old because Flowmaster 40s sound raspy and annoyingly loud to me anymore. The only reason I might run them is if someone could show me a back to back dyno chart... same car, same dyno, same day showing a real HP boost. Magnaflows are deeper than stock but not obnoxious or intrusive... I am NOT too old, I am NOT too old I am NOT too old.......
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Old May 7, 2012 | 10:17 PM
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The funny thing is, I have the same Magnaflows on my CTS-V, with the rest of the exhaust being stock, and they are loud, the way I wish my Corvette sounded.
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Old May 7, 2012 | 11:19 PM
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no im not looking for really loud i guess i should be happy because it sounds good nice and deep and when im off the gas the cops dont look my way the motor has 430 hp so you can tell something is under the hood
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Old May 8, 2012 | 10:12 AM
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I JUST installed that exact system on my '81 last week, so I can't tell you if they get louder over time, I've only put maybe 80 miles on since then. I do know that they sound great. But it's all sort of relative. It depends on what you have had on before. The system I replaced was mostly stock, without the catalytic converter. So it sounds better then it did, and I can feel a liittle more power. I don't know about the Magnaflows though, that's a continual discussion here. It's hard to compare apples to apples though.

Jim

oh, and I have a GM crate engine, somewhere around 300 hp...

Last edited by jim-81; May 8, 2012 at 10:14 AM. Reason: add motor
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Old May 8, 2012 | 02:30 PM
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Originally Posted by jim-81
I JUST installed that exact system on my '81 last week, so I can't tell you if they get louder over time, I've only put maybe 80 miles on since then. I do know that they sound great. But it's all sort of relative. It depends on what you have had on before. The system I replaced was mostly stock, without the catalytic converter. So it sounds better then it did, and I can feel a liittle more power. I don't know about the Magnaflows though, that's a continual discussion here. It's hard to compare apples to apples though.

Jim

oh, and I have a GM crate engine, somewhere around 300 hp...
Same system here on my 74, 330 horse crate. Hedman headers long tubes into 3 inch exhaust, x pipe and magnaflow polished muffs. I was also told that they might get louder over time but not yet. They do sound pretty good when you get on it though.
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Old May 8, 2012 | 08:48 PM
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Did exactly what you did on my 82 last week. Yes they are very quiet to me and was suprized. I removed a stock exhaust with cat but had the Flowmasters and was much more meaty that the Magnaflows without a cat. I hated the way the flowmasters looked under the car and was the main reason for changing them. It even feels like I lost a little low end torque as well which doesn't make any sense???
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Old May 8, 2012 | 08:51 PM
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Originally Posted by alconk
Did exactly what you did on my 82 last week. Yes they are very quiet to me and was suprized. I removed a stock exhaust with cat but had the Flowmasters and was much more meaty that the Magnaflows without a cat. I hated the way the flowmasters looked under the car and was the main reason for changing them. It even feels like I lost a little low end torque as well which doesn't make any sense???
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