Gut Pre-Cats? X-pipe?
Thread Starter
Melting Slicks
Joined: Oct 2001
Posts: 2,480
Likes: 0
From: Wa.
Gut Pre-Cats? X-pipe?
I will be installing a Z06 cat back system. Anyone do this and/or gut pre-cats and/or add a X-pipe? Any advantages or disadvantages? Whats your opinion? Thanks :cheers:
Drifting
Joined: Jun 2001
Posts: 1,934
Likes: 5
From: Mount Vernon Arkansas
St. Jude Donor '12-'13
Re: Gut Pre-Cats? X-pipe? (JWD01)
I gutted my pre-cats when I installed my rear gears and torque converter. Definitely changed the tone of the exhaust. Sounds better but definitley loud around the 2500rpm range. I'm sure the exhaust has something to do with the different sound as well. I have the 2 tip Borla Stingers. Still not as bad as the Borla XR-1 system I had on my '99 Vette.
Team Owner
Joined: Dec 2000
Posts: 58,783
Likes: 1
From: D*ck ina Box
CI III & IV Vote Ho
CI II, III, IV & V Vet
CI IV Bracket Champ
St. Jude Donor '03-'04
Re: Gut Pre-Cats? X-pipe? (backtrail69)
i would do it
Team Owner
Joined: Oct 2001
Posts: 46,765
Likes: 5
From: Boynton Beach Florida
St. Jude Donor '07-'12, '20
Re: Gut Pre-Cats? X-pipe? (Mean Green 2000)
i would do it
you need to be driving and actually own a vette to offer mod advice ;) :eek: :D
you need to be driving and actually own a vette to offer mod advice ;) :eek: :D
Bob
Team Owner
Joined: Dec 2000
Posts: 58,783
Likes: 1
From: D*ck ina Box
CI III & IV Vote Ho
CI II, III, IV & V Vet
CI IV Bracket Champ
St. Jude Donor '03-'04
Re: Gut Pre-Cats? X-pipe? (16Again)
"closet modder" that's funny :lolg:
I just want people to know where the straight up info is coming from and who is 15 years old ;) :D
I don't mind enthusiasts, I mind people getting a reputation for something they're not :D
I just want people to know where the straight up info is coming from and who is 15 years old ;) :D
I don't mind enthusiasts, I mind people getting a reputation for something they're not :D
Le Mans Master
Joined: Jan 2000
Posts: 6,725
Likes: 0
From: South Bend IN
Re: Gut Pre-Cats? X-pipe? (Mean Green 2000)
Mean Greens always on top these things! :cheers: :cheers: :thumbs: Anyway from what I've read you lose torque but possibly gain a few Hp but you'll smell the fuel badly out the tailpipes. :p:
[Modified by Dave00C5, 8:14 PM 2/18/2003]
[Modified by Dave00C5, 8:14 PM 2/18/2003]
Melting Slicks
Joined: Apr 2001
Posts: 2,909
Likes: 1
From: Highland Village TX
Re: Gut Pre-Cats? X-pipe? (JWD01)
Gut the pre cats for sure. I will do this when I get my gears/tc installed since they take off the exhaust. 2001's liek yours and mine have pre cats.
Gut them :D
The Bandit.................... :cheers:
Gut them :D
The Bandit.................... :cheers:
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Burning Brakes
Joined: Aug 2002
Posts: 1,045
Likes: 0
From: KC, MO Missouri
Re: Gut Pre-Cats? X-pipe? (Dave00C5)
My .02 :D I would have an exhaust shop cut them out and repace with straight pipe. When you gut the cat it leaves a chamber in the pipe for gas to turbulate. It can also make a tinging sound while driving. The catalyst core straightens the air. When you remove it you get turbulence. Repeating myself I will stop :seeya
Thread Starter
Melting Slicks
Joined: Oct 2001
Posts: 2,480
Likes: 0
From: Wa.
Re: Gut Pre-Cats? X-pipe? (Quick Brick)
Thanks for the info. Sounds like the thing to do is to gut those babies. Since I will have the whole exhaust system off the car, what would a X-pipe do with this set-up? :cheers:
Safety Car
Joined: May 2000
Posts: 4,823
Likes: 347
From: Albuquerque NM
Re: Gut Pre-Cats? X-pipe? (JWD01)
Leave the cats alone. At your power level and up to 400 (or so) rwhp the stock cats aren't a significant restriction. So no advantages. The disadvantages mount up: Bad smells, noise, federal offense for tampering, smog certification down the road, and why add to the pollution problem with no gains? :cheers:
Thread Starter
Melting Slicks
Joined: Oct 2001
Posts: 2,480
Likes: 0
From: Wa.
Re: Gut Pre-Cats? X-pipe? (6Speeder)
6Speeder
We're talking about the pre-cats not the main cats. GM only used them for a couple of years and then eliminated them. They are for cold start emissions only. All smog checks are done hot so that won't be a problem. :cheers:
We're talking about the pre-cats not the main cats. GM only used them for a couple of years and then eliminated them. They are for cold start emissions only. All smog checks are done hot so that won't be a problem. :cheers:
