Corsa's on the way.......
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Joined: Oct 2004
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Corsa's on the way.......
Just ordered a new cat back system from Corsa. 
I have read that some have gutted their cats and improved sound and performance. Has anyone gutted their cats wth a Corsa system? Can I gut the cats without removing them from the car? If so, what is the method for gutting on the car?
I have read that some have gutted their cats and improved sound and performance. Has anyone gutted their cats wth a Corsa system? Can I gut the cats without removing them from the car? If so, what is the method for gutting on the car?
Drifting
Joined: Dec 2002
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From: Tracy CA
Those are expensive cats to hog out like that... I'd just have new head pipes fabbed up. Keep the cats or sell them on ebay. You'll have tons more space under the motor too.
Oh hell - just get some longtubes...
Oh hell - just get some longtubes...
Large Impressive Member
Joined: Jul 2003
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From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
The LT1 cats flow so well, there's probably not 5 hp to be gained on the average mildly modded LT1. Eliminating the resonator would probably gain you more than trashing your cats and help keep the air cleaner.
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I was thinking about long tubes....
Will they bolt up directly to the Corsa Cat Back system? If not does someone sell adapters tomake them bolt up. Thirdly, Does someone have a long tube part number which works well with 93 LT1?
Will they bolt up directly to the Corsa Cat Back system? If not does someone sell adapters tomake them bolt up. Thirdly, Does someone have a long tube part number which works well with 93 LT1?
Le Mans Master
Joined: Feb 2002
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Unless you live rural, I wouldn't do anything that might cause the car to fail an emissions test. Emissions testing is going to become a LOT more widespread accross the USA in the next 5 yrs. As a measure of the flow rate of the stock cats, the high-flow Random Technology brand bullet cats only flow about 10% higher than the stockers.
There was a group purchase on some brand of long tubes for LT1 posted on the forum just last week I think, can't remember brand but I thought I read where they mentioned fitting up to Corsa catback system with a minor alteration.
There was a group purchase on some brand of long tubes for LT1 posted on the forum just last week I think, can't remember brand but I thought I read where they mentioned fitting up to Corsa catback system with a minor alteration.
Race Director
Joined: Sep 2002
Posts: 17,881
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From: The third orange grove on the left
Originally Posted by BLK/BLK'93
Just ordered a new cat back system from Corsa.
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Actually I did order from Mid America, and got them delivered for $730 with shipping. Attended a vette rally in Columbus Ohio, and Mid America was handing out catalogs and a key code for 10% off anything in the catalog.
Off to buy new hardware for the cats....
Off to buy new hardware for the cats....
Race Director
Joined: Aug 2003
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From: San Jose Pat Tillman - American Hero
Originally Posted by BLK/BLK'93
I was thinking about long tubes....
Will they bolt up directly to the Corsa Cat Back system? If not does someone sell adapters tomake them bolt up. Thirdly, Does someone have a long tube part number which works well with 93 LT1?
Will they bolt up directly to the Corsa Cat Back system? If not does someone sell adapters tomake them bolt up. Thirdly, Does someone have a long tube part number which works well with 93 LT1?
Instructor
Joined: Aug 2000
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From: Boise ID
Originally Posted by Corvette Kid NC
The LT1 cats flow so well, there's probably not 5 hp to be gained on the average mildly modded LT1. Eliminating the resonator would probably gain you more than trashing your cats and help keep the air cleaner.
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Ok, I finally got the old system out. The two nuts came off the converter, but the bolt broke in half. I tried every tool in my shop to get the bolt out of the cat, but nothing worked. I finally ruined 12 drill bits drilling the bolt out of the cat. What a nightmare.
I am seriously considering installing long tubes. Does anyone have any long tubes which will fit with the Corsa's. I live in Ohio and we do not have emissions testing, and being a 93 there is no O2 sensor after the cats.
Can I use headers, and leave the cats off? Or is there a header system which bolts onto the cats?
I am seriously considering installing long tubes. Does anyone have any long tubes which will fit with the Corsa's. I live in Ohio and we do not have emissions testing, and being a 93 there is no O2 sensor after the cats.
Can I use headers, and leave the cats off? Or is there a header system which bolts onto the cats?
Pro
Joined: Jul 2002
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From: Flower Mound TX
Originally Posted by BLK/BLK'93
Which headers can I use with the cats? I guess this would be the easiest way. The cats only have 30K on them. They look very clean inside.
Dynatech makes a nice cat. in a couple different sizes to fit long tube header, but you need a small amount of custom work not expensive though.
http://www.secureperformanceorder.co...e/powercat.cfm