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

High Flow Cats

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Old Aug 12, 2009 | 03:14 PM
  #1  
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Default High Flow Cats

is there a place that sells them for my GT and if so does anyone know how much they are? i was thinking about doing that so i can pass smog still cuz calif is a bitch when it comes to emissions.
Old Aug 12, 2009 | 03:52 PM
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arent we not allowed to change the stock cats in cali?
Old Aug 12, 2009 | 04:01 PM
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technically in cali your not supposed to do anything haha. its either that or im gonna get a catted x-pipe
Old Aug 12, 2009 | 04:12 PM
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look at pypes website
Old Aug 12, 2009 | 04:43 PM
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nobody is allowed to ship cats to california..
you can try these guys tho i got mine a while back

http://www.modulardepot.com/Exhaust/...duct_info.html
Old Aug 12, 2009 | 05:21 PM
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.....*sigh* damn i hate that.
Old Aug 12, 2009 | 09:43 PM
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Any and ALL aftermarket catted x-pipes are illegal in CA. They all remove the pre-cats and you will fail visual if the tech knows what he is doing.

Your best bet is to buy or rent a stocker mid-pipe and use it to pass smog, then re-install whatever you are using after you pass.

FWIW the Pypes cat is CARB legal, but again the catted x is not.
Old Aug 12, 2009 | 10:03 PM
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There's no such thing as a "high-flow" catalytic converter, except in the creative marketing department minds of far too many vendors.

Read this...
Old Aug 12, 2009 | 11:55 PM
  #9  
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could i keep my stock one and just buy an o/r car
Old Aug 13, 2009 | 01:02 AM
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i have to smog in november ill let you guys know what happens



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