C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old May 28, 2003 | 09:10 PM
  #1  
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Default no cats

Alot of you members have posted that you do not have cats. Those of you with the short headers and cat back exhausts did you do the old fashion knock out the insides of cat or have a pipe fabbed to take place of cat?
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Old May 28, 2003 | 10:59 PM
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Default Re: no cats (BAM92)

And can you pass Ca emissions with hollowed out cats??? :D
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Old May 29, 2003 | 12:14 AM
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From: What did the 5 fingers say to the face? SLAP!!
Default Re: no cats (BAM92)

3 inch pipe welded inside converter case. Looks stock from the outside, plus it flows better (no turbulence) than just a hollowed out shell.
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Old May 29, 2003 | 01:01 AM
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Default Re: no cats (BAM92)

Yea I know it is illegal and won't pass emissions here in Texas. Just curious. It is tempting.
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Old May 29, 2003 | 01:29 AM
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Default Re: no cats (flyersfan1088)

3 inch pipe welded inside converter case. Looks stock from the outside, plus it flows better (no turbulence) than just a hollowed out shell.
Where can we get converter cases? Are you still passing the 'sniff' test?
Thanks.
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Old May 29, 2003 | 02:05 AM
  #6  
BAM92's Avatar
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Default Re: no cats (BAM92)

I have 133k on these cats. Was thinking of modifing these and buying a set of lower milage ones for backup.
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Old May 29, 2003 | 02:23 AM
  #7  
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Default Re: no cats (BAM92)

How much do they run typically?
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Old May 29, 2003 | 02:58 AM
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Default Re: no cats (2dogs)

Well they dont run as much as dogs but I have seen them run. :crazy:
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