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

Removing the rear 2 stock cats from stock h pipe?

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Old 12-27-2011, 01:57 PM
  #11  
Andy13186
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all the shops i called said its illegal and if the car comes in with 4 cats it needs to leave with 4 cats..

we dont have any emissions testing here so i dont know .. but they said it was federal law.
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Old 12-27-2011, 05:45 PM
  #12  
kast1376
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Originally Posted by Andy13186
all the shops i called said its illegal and if the car comes in with 4 cats it needs to leave with 4 cats..

we dont have any emissions testing here so i dont know .. but they said it was federal law.
That IS federal law. Some areas just look the other way.
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Old 12-27-2011, 06:11 PM
  #13  
Explosive
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Why do people worry about the smell ? If anything it's just going to smell like fuel. I always ditch the cats on my vehicles when doing exhaust.
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Old 12-27-2011, 07:19 PM
  #14  
Andy13186
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Originally Posted by Explosive
Why do people worry about the smell ? If anything it's just going to smell like fuel. I always ditch the cats on my vehicles when doing exhaust.
ive ridden behind cars that have horrible smelling exhaust, it sucks

usually its older and loud cars which is why i thought it may be caused by lack of cats
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Old 06-28-2014, 11:14 AM
  #15  
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Originally Posted by kast1376
Why not just purchase a used OR or catted x/h pipe? They usually go VERY cheap around here, a 100 bucks or so.
I'm looking to buy one
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