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Mufflers w/ or w/out cats

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Old Mar 9, 2017 | 03:41 PM
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Default Mufflers w/ or w/out cats

Hey! Corvette fans. I need to understand some exhaust issues. I had a Callaway CAI, ARHs installed w/high flow cats and kept my stock mufflers. Now after paying that off with my allowance from the wife I am. thinking about changing mufflers. Now the question is since I have high flow cats installed w/headers there is no need to have mufflers /w cats correct? Or ? Thanks for any input and if you have any suggestions for mufflers that are throaty but not loud, I would greatly appreciate it.
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Old Mar 9, 2017 | 07:09 PM
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You can run it with cats and no mufflers, but how it will sound is purely subjective. Personally, I find it obnoxiously loud. Others like it.
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Old Mar 9, 2017 | 10:14 PM
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Originally Posted by Dirty Dog
Personally, I find it obnoxiously loud. Others like it.
Agree 100%. I did this many years ago and the interior resonance was really, really bad. The sound out the back was probably not as loud.
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Old Mar 9, 2017 | 10:24 PM
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with both of the above posters. If it were me, I would find an aftermarket muffler system you really like the sound of and go that route.
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Old Mar 9, 2017 | 11:00 PM
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But can you order the mufflers without cats so you don't in my case have the high flow cats after the headers then the cats with the mufflers. I'm a little confused on this part. Having a total of four cats on exhaust system seems to be a restrictive proposition.
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Old Mar 9, 2017 | 11:35 PM
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Originally Posted by Grizvette
But can you order the mufflers without cats so you don't in my case have the high flow cats after the headers then the cats with the mufflers. I'm a little confused on this part. Having a total of four cats on exhaust system seems to be a restrictive proposition.
"Axle back" mufflers will not add another set of cats. You would have LT headers to two cats to x or h pipe, to mufflers. Some omit the cats altogether and run mufflers only. Unless highly modified, your high flow cats will not cause any significant loss of power, so as mentioned above, just get an axle back with new mufflers. You can even do this easily at home with a few hand tools.
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Old Mar 10, 2017 | 12:09 AM
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Now I get it. Can a person replace just the muffler and not the piping that goes over the axle? Or would that involve a lot of cutting .?
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Old Mar 10, 2017 | 08:42 AM
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Originally Posted by Grizvette
Now I get it. Can a person replace just the muffler and not the piping that goes over the axle? Or would that involve a lot of cutting .?
You can, but it would be easier to just get an axle back system.
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Old Mar 10, 2017 | 10:19 AM
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maybe this can help ??

http://shop.huronspeedproducts.com/H...ust-hsp3c5.htm


http://shop.huronspeedproducts.com/X...ck-XSPC525.htm
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Old Mar 10, 2017 | 12:00 PM
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Thanks to everyone for your time and info, this is a great web site..
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Old Mar 11, 2017 | 12:18 AM
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I cleared out my pre-cat pup's with pry bars and a vacuum when my exhaust was out.
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