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post #1 of 9 (permalink) Old 07-07-2014, 11:33 AM Thread Starter
 
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Cats or No Cats

I have an 05 m6 with jba lt and magnaflow cat-back. Its sounds nice but i want something a little more aggressive sounding. I believe it still has the stock cats. should i go cat-less or get high flow cats? Thanks
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post #2 of 9 (permalink) Old 07-07-2014, 12:03 PM
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The stock, oem catalytic converters for your car are monolithic in design and are not restrictive. Going cat-less is irresponsible/disrespectful to other people who breathe, and pointless. You'd be better off running less or no muffler. The idea that removing the cat or cats to improve performance went out the window about 30 years ago, when monolithic cats were put into use.
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post #3 of 9 (permalink) Old 07-09-2014, 08:28 PM Thread Starter
 
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I did not 1 time say anything about performance gain, Im wanting to know how much louder it will be without cats.. I am certainly not a tree hugger and if I was I would be driving a Prius not a 6.0 Liter GTO
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post #4 of 9 (permalink) Old 07-09-2014, 08:45 PM
 
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If you have longtubes, I'd be shocked if your car had stock cats on them.

You either have high-flow cats or no cats at all.

From what I've heard, removing cats adds rasp, not necessarily volume.

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post #5 of 9 (permalink) Old 07-09-2014, 08:54 PM
 
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Quote:
Originally Posted by TW1ST3D_GOAT View Post
I am certainly not a tree hugger and if I was I would be driving a Prius not a 6.0 Liter GTO
There is nothing in his post that can be construed as accusing you of being one, but, I digress. Removing the cats don't make it louder or at least it didn't when I had them off of mine.

2005 Pontaic GTO - CGM 6 Speed (My car)
2017 Chevrolet Colorado 2WT (My daily driver)
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post #6 of 9 (permalink) Old 07-09-2014, 09:51 PM
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Garage
Swap the mufflers for some obnoxious ones like the Loudmouth or Spintech. Magnaflow are some of the quietest

2004 Blk/Rd M6
6.3 litre LS1

Built and tuned by svede
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post #7 of 9 (permalink) Old 07-10-2014, 08:36 AM Thread Starter
 
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Thank you fellas thats all I wanted to know. After further investigating it does have high flow cats so i guess if i wanted louder i would have to get a different axle-back..
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post #8 of 9 (permalink) Old 08-24-2014, 05:32 PM
 
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Spintech all the way.
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post #9 of 9 (permalink) Old 09-30-2014, 12:45 AM
 
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I have longtubes with gutted cats and loudmouth mufflers. It is ridiculously loud. The muffler will get you the noise.
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