4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

how much louder?

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Old 08-10-2006, 01:42 AM
  #1  
97modifiedmustangGT
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Default how much louder?

how much louder is cats compared to no cats. i know its just sound difference and no performance difference
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Old 08-10-2006, 01:49 AM
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Mt Twigbert
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Default RE: how much louder?

Not 'too' much louder.. And I'm assuming your talking about a cated pipe opposed to an O/R?
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Old 08-10-2006, 02:10 AM
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hotrod7687
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Default RE: how much louder?

I have a MAC o/r H pipe, it didnt make it too much louder. Its definately noticeable, but not annoyingly loud unless you go revving over 4k rpm all the time. Made mine deeper too

Mine did have some effect on performance. I lost a little low end torque, but gained more above 3000.
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Old 08-10-2006, 08:20 PM
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97modifiedmustangGT
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Default RE: how much louder?

so taking off the cats wont make it higher pitched but maybe a little deeper?
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Old 08-10-2006, 08:25 PM
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04BlueGT
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Default RE: how much louder?

Most o/r pipes make the exhaust note somewhat raspy and louder.
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Old 08-10-2006, 08:43 PM
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meebix
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Default RE: how much louder?

Once an o/r pipe is truely broken in... they is no comparison to a catted midpipe. My friend from work has an 01 GT with LTs, catted X and Stingers.... and I have LTs, o/r X, and LM1's....

So pretty much a very very similar setup other than my o/r X, and my sound BLOWS him away, no even close. I know my LM1s still have some over his stingers, but I would say no cats make a pretty damn big difference.

And yes, without the cats its much more unrefined and little higher pitched.... and LOUDDD.
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