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Hi Flow Cat - Waste of Money or Good Mod?

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Old Oct 10, 2004 | 02:47 PM
  #51  
F0RSAKEN's Avatar
Cheese
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From: Lynnwood, WA
Originally Posted by Mahjik
Try driving behind a cat-less Mustang on the highway then come back and post.
Pfff who drives BEHIND Mustangs?
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Old Oct 10, 2004 | 03:18 PM
  #52  
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From: Temple city, CA
Can I run a hf cat, cat back, and downpipe without chipping the ecu safely?
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Old Oct 10, 2004 | 03:44 PM
  #53  
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From: Eugene, OR, usa
Originally Posted by jimlab
Fair enough. My Supra didn't stink either, and yes Jeff, I've been around quite a few of those without cats too.
That is why I specifically mentioned rotary engined vehicles but feel free to change the subject.

I'm having more moments with you because I'm growing tired of what I perceive as a abrasive demeanor. I see no need to tiptoe around but there is no need to constantly belittle people either, you seem to pull out the big guns anytime someone does as much as a typo. You just can't help yourself I know, now I can't help myself either.
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Old Oct 10, 2004 | 04:09 PM
  #54  
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From: Kansas City, MO
Originally Posted by ManGaZeRo
Can I run a hf cat, cat back, and downpipe without chipping the ecu safely?
Yes
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Old Oct 10, 2004 | 04:27 PM
  #55  
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Super Snuggles
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From: Redmond, WA
Originally Posted by turbojeff
I'm having more moments with you because I'm growing tired of what I perceive as a abrasive demeanor. I see no need to tiptoe around but there is no need to constantly belittle people either, you seem to pull out the big guns anytime someone does as much as a typo. You just can't help yourself I know, now I can't help myself either.
Fine, just as long as you know what you're getting yourself into.
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Old Oct 10, 2004 | 05:23 PM
  #56  
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From: Southern California
Originally Posted by Fritz Flynn
Please tell me how a HF cat can get destroyed in just a few pulls on a dyno because of fuel issues I'm just curious.
Thanks,
Fritz
There’s an article on rotaries and catalytic converters in the current issue of Mazdasport Magazine. It’s possible to destroy a cat on a dyno, but it’s pretty obvious the cat is being cooked. If the cat sees too much fuel the washcoat, which is typically at it’s heat limit in normal WOT conditions on a rotary, will overheat and the catalyst material will burn out. This is more easily done on an NA, because turbo(s) act as a heatsink. If a rotary runs rich, it may be best to view a good high flow cat as a normal wear item.
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Old Oct 10, 2004 | 06:04 PM
  #57  
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From: Eugene, OR, usa
Originally Posted by jimlab
Fine, just as long as you know what you're getting yourself into.
I'm not getting myself into anything, LOL.
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Old Oct 10, 2004 | 06:13 PM
  #58  
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From: Redmond, WA
Originally Posted by turbojeff
I'm not getting myself into anything, LOL.
OK, whatever you say.
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