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Old 07-16-2014, 12:49 PM   #1
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High flow cat /exhaust question

Got a 2014 mustang gt, current mods are jlt intake, sct x4, jba X pipe with optional cat delete pipes, amd mbrp Street axle backs...
My question is, what's yalls recommended brand high flow cat to go with and will they make the exhaust any louder than with the factory cats?
I tried my exhaust setup at first with no cats and factory mufflers, not loud enough!
Then tried no cats and the mbrp mufflers, super loud!
So I put the factory cats back in with the mbrp mufflers and it's too quiet! Lol
I almost would have dealt with it being "too loud" with no cats but sotp the car lost a ton of mid range pull with the lack of back pressure.
Open to suggestions, I want a good sound but not obnoxious loud.. Thinking about maybe even switching to an h pipe because I like that old school sound better than raspy race car..

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Old 07-16-2014, 03:24 PM   #2
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if youre keeping the stock headers, your best bet is to retain the factory cats, but there are some good hi flow cat options available, Magnflow makes some nice hi flow cats
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Old 07-16-2014, 04:59 PM   #3
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Will I get any gain in sound with them though or just better flow?

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Old 07-18-2014, 01:19 AM   #4
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Old 07-18-2014, 08:16 AM   #5
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Thanks Tommy! I guess I'll start advertising my off road X pipe then and look for a good deal on a high flow catted h pipe!

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Old 07-18-2014, 09:07 AM   #6
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Just to confirm, I picked up both sound and flow with high flow cats on my Steeda x pipe. In fact it picked up enough volume to bother neighbors when I left at 5:30am. It was coupled with the resonators deleted and Kooks ab. I have heard Kooks makes Steeda's xpipe with Magnaflow cats. I had to take it off and put it up for sale due to the complaints.
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Old 07-18-2014, 09:31 AM   #7
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Wow that's crazy! You should have heard mine with off road X pipe and mbrp axle backs (mbrp kit eliminates the resonators too) it was crazy how much louder just the cat removal was couldn't believe it!

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