4.6L General Discussion This section is for non-tech specific information pertaining to 4.6L (Modular) Mustangs built from 1996 to 2004.

Need Cats

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Old 02-15-2008, 05:55 PM
  #1  
rezarxt
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Default Need Cats

Yeah I need some cats for my exhaust. Its a 2000 GT with flowmaster exhaust (off road catless). I have the stock cats but I really love the loud sound so I dont want to put them back on. Can you guys reccomend any highflow/performance cats for me?

It wont pass inspection right now in VA so thats why i need them. It came from AZ. Thanks
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Old 02-15-2008, 06:03 PM
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usermst9673
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Default RE: Need Cats

any cat even high flow will be quieter than no cats, but i would go with magnaflow high flow cats. Or do you just need them for visual to pass inspection? Just get some cats and gut them. They wont know the difference.
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Old 02-15-2008, 07:03 PM
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02StangGuy
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Default RE: Need Cats

^^ +1. just gut them..thats what i did. wont u have to buy a new mid pipe tho? not just the cats
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Old 02-15-2008, 07:22 PM
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livefast1
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Default RE: Need Cats

gut your stock ones and have them welded to your h pipe.
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Old 02-15-2008, 07:47 PM
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baino
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Default RE: Need Cats

I'd go with magnaflows. They are not too cheap though
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Old 02-15-2008, 08:11 PM
  #6  
rezarxt
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Default RE: Need Cats

Okay ive decided to gut them. I have an xpipe btw not an hpipe. That wont matter will it?

And as far as gutting them, should I do it or will the shop do it?Ican just stick a rod through it right and make a hole or do i need to cuta hole in the side and cut out a holethrough the filter andthen have it rewelded closed again. It isnt illegal is it since there are no emissions testing in VA? (just learned that)

Any help/specifics/directions would be appreciated since I just bought the car and my knowledge is limited.

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Old 02-15-2008, 10:32 PM
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baino
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Default RE: Need Cats

I think it is still illegal, they just dont test for it. Some shops are touchy about it because it is a hefty fine if they get caught. It being an xpipe doesnt matter.
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Old 02-15-2008, 10:51 PM
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99BlackPonyGT
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Default RE: Need Cats

if you dont get emission tested, why do you need them again?
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Old 02-15-2008, 11:22 PM
  #9  
livefast1
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Default RE: Need Cats

there is a visual inspection for cats during the inspection usually. you are gonna wanna most likely cut the cats into 2 halves and have them welded over the pipe. they will be empty and will just weld over your x pipe.
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Old 02-16-2008, 03:54 PM
  #10  
Lefty
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Default RE: Need Cats

i would just put the stock ones on for inspection and then take them off after you get your sticker. its a pain but worth it for the sound i think.
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