LT1-LT4 Modifications 1993-97 Gen II Small Block V8

ok how do gut the cat?? is...

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Old Nov 24, 2005 | 07:52 PM
  #41  
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Originally Posted by 95formulalt1
u 2 sound like school girls .......lol.. any way any sound clips ???? and how hard is it to gut the cat or how much time
my cat got gutted by a faulty msd box... it killed the spark and the car kept firing the injectors until the cat was cherry red, 2 days later i was shooting chunks through my exhaust.
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Old Nov 24, 2005 | 07:53 PM
  #42  
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Originally Posted by 95formulalt1
any sound clips ????
I could probably try to make a recording of mine tomorrow.

I don't know how good the quality will be though.
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Old Nov 24, 2005 | 08:00 PM
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thats fine i would just lke to hear it.....thanks
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Old Nov 24, 2005 | 08:03 PM
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wouldnt that kill ur exhaust??
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Old Nov 24, 2005 | 08:25 PM
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Originally Posted by SmokedOutZ28
stock manifolds & stock y-pipe with a pipe in place of the cat and the magnaflow cat back... all the rasp and crackling during accel sounds like **** it sounded better with the hollow cat in place rather then that pipe IMO... but peoples opinion's are different from mine.
yeah it should cause the gutted cat acts like a resonator. basically gutting the cat gets you a loudmouth. all the loudmouth has is a resonator. basically a larger pipe in which sound can resonate off of and cancel out.
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Old Nov 25, 2005 | 09:15 AM
  #46  
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cool....
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Old Nov 25, 2005 | 11:56 AM
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instead of ruining a rather expensive catlytic converter, i would just put a straight pipe in there, and sell the working cat to make some cash.
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Old Nov 25, 2005 | 02:53 PM
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would i have to weld it in place???
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Old Nov 25, 2005 | 06:13 PM
  #49  
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nah, u could just get to flanged ends, clamp them on opposite sides of your cat and but a straight pipe in between, or just get a 30 dollar cut out and put it in front of your cat.
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Old Nov 26, 2005 | 12:18 AM
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howbout that sound clip im doing cat ting this weekend hope it sounds good
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Old Nov 26, 2005 | 08:34 AM
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ya i know where the sound clip????
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Old Nov 30, 2005 | 10:57 AM
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one thing im wondering about.... is it normal for the car do backfire when reving down with a cat and exhaust?

i will try to make a recording of mine when i get the chance but i want to put my short tube headers on first because there is a exhaust leak in the manifolds and i want it fixed
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Old Nov 30, 2005 | 11:55 AM
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its not backfiring. its just popping. most exhausts do that while down shifting.
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Old Nov 30, 2005 | 12:23 PM
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oh. but its still like raaaaaaaammmmmm bang bang. i usualy notice the sound you are talking about on other cars. maybe this is just on the V8's there arent to many atound in iceland
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Old Nov 30, 2005 | 12:38 PM
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all the **** in your cat probably came loose. its just blown out.
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Old Nov 30, 2005 | 03:04 PM
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iceland???
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Old Nov 30, 2005 | 03:18 PM
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Originally Posted by 95formulalt1
iceland???
kinda cool aint it?
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Old Nov 30, 2005 | 03:46 PM
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Well its not to bad. the vert im working on can be driven all year round. it isnt as cold as people think today at about 3 o'clock it was 44 degrees while i was working outside.

i just took this pic today around 3 or 4 (sorry for stealing the thread)


but about the cat. i have heard that gutting cats can have a negative effect on the flow of the air in the exhaust and a pipe is prefered
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Old Nov 30, 2005 | 03:50 PM
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Originally Posted by bww3588
its not backfiring. its just popping. most exhausts do that while down shifting.

i have noticed.. on SOME vehicles it is caused by the hot air hitting the cool air.. that is what makes the popping. But then other vehicles have super long exhaust and it still does it. If we put a full exhaust... with heads... and X pipe (dual exhaust...), then each pipe havign a muffler, it doesn't pop.

I have heard a couple explinations why exhaust pops... but no one has given me a clear andswer

Originally Posted by old and good

but about the cat. i have heard that gutting cats can have a negative effect on the flow of the air in the exhaust and a pipe is prefered

it doesn't effect flow any more than a muffler does. A gutted cat will flow better than your muffler. But infact. you cat aint much of a restriction point at all in the first place. Only point in removing it is sound, or your doing a full performance build where as a cat is pointless cuz your redoing the entire exhaust anyways. BUt really, peopel take it out just for a louder exhaust note.

It wont affect flow, so the pipe WIL flow better than a gutted cat, but not enough for ANYONE to notice. ITs all about the sound
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Old Nov 30, 2005 | 04:27 PM
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Originally Posted by bww3588
kinda cool aint it?
ya...r u in the milatery??? or do u live there??
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