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best high flow cats, regardless of price?

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Old Apr 14, 2005 | 07:33 AM
  #21  
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enhanced250
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i just got ultimate racing high flo0ws im going to put them on today 5yr 50,000mile warranty is why i bought them
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Old Apr 18, 2005 | 06:06 PM
  #22  
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What are the prices of the HF cats listed in this thread?
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Old Apr 18, 2005 | 06:10 PM
  #23  
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around $450 from intensepower.com
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Old Apr 18, 2005 | 06:24 PM
  #24  
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I like the Helix HF Cats that I just installed this past weekend. Very noticeable gain, and a real aggressive exhaust note even with the stock exhaust.

You can see a video I recorded with the cats at this link:
https://my350z.com/forum/intake-exhaust/118619-video-helix-hi-flow-cats-stock-exhaust.html
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Old Apr 19, 2005 | 03:34 PM
  #25  
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Will all of these HF Cats pass emissions? Not California emissions, I mean just basic emissions?

Helix prints they'll pass Cali emissions, pretty impressive.

But what about Crawford and Kinetix?
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Old Apr 19, 2005 | 03:47 PM
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Most will more than likely pass a sniffer, but I have no idea about a visual inspection.
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