Gutting Pre-Cats???
Thread Starter
Racer
Joined: Jun 2000
Posts: 323
Likes: 0
From: Cape Coral FL
Gutting Pre-Cats???
Just installed a 2002 Z06 TI exhaust on my 2001 coupe. Sounds pretty good. E-mail me if you interested in sound clips or if you can post them for me. I was wondering if gutting my pre-cats would give me any performance gains or sound improvments. I have noticed a SOTP gain just by installing the system but was expecting a little more. Not quite the Z06 sound. 405 makes a difference as well I guess. What is the best way to do so and is there any inherent problems in doing so? Engine codes, A/F mixture off??
Thanks in advance
Thanks in advance
Le Mans Master
Joined: Nov 2000
Posts: 7,294
Likes: 1
From: Coral Springs Florida
Re: Gutting Pre-Cats??? (CULATER)
Don't waste you time IMO...Pull the cats! They are DEAD and very RESTRICTIVE weight(32lbs.)and you will pick up about 10RWHP/5RWT and the sound is Nasty like this..http://www.badazcorvettes.com/~vstella/video/ARE226.mpg :eek:
Thread Starter
Racer
Joined: Jun 2000
Posts: 323
Likes: 0
From: Cape Coral FL
Re: Gutting Pre-Cats??? (vstella)
I wish i could just get away with it. I did so on a previous car and had problems with inspections. I have found ways around it but not really worth the headach IMO.
Instructor
Joined: Apr 2000
Posts: 166
Likes: 0
From: CA
Re: Gutting Pre-Cats??? (CULATER)
Gutted pre-cats over weekend. Fairly simple to do. No check engine light. No codes. Exhuast slightly louder...perfect. Awakened my PRTs.
Set aside couple hours. Fore to aft...6 flange nuts, two brace bolts, two O2 sensors, two spring hanger nuts, four cat back bolts. Use anti-seize compound on exhaust bolts and nuts. Rec. a small mirror for probing purposes.
Special thanks to Tim for his assistance. :cheers:
[Modified by Johnny Reb, 2:45 PM 4/15/2002]
Set aside couple hours. Fore to aft...6 flange nuts, two brace bolts, two O2 sensors, two spring hanger nuts, four cat back bolts. Use anti-seize compound on exhaust bolts and nuts. Rec. a small mirror for probing purposes.
Special thanks to Tim for his assistance. :cheers:
[Modified by Johnny Reb, 2:45 PM 4/15/2002]
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
Re: Gutting Pre-Cats??? (Johnny Reb)
Gutted pre-cats over weekend. Fairly simple to do. No check engine light. No codes. Exhuast slightly louder...perfect.
mikemercury.home.att.net/precats.htm
Pro
Joined: Aug 2001
Posts: 608
Likes: 0
From: Las Vegas NV
Re: Gutting Pre-Cats??? (Mike Mercury)
Do you have instruction on how to gut the cat's? Is it easy? I'm about to add the A&A ehaust mod with a magnaflow X pipe and was thinking of gutting the cats while I'm down there. :D
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