installed new catco cat.update. need help 1-22-08 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 01-18-2008, 02:54 AM   #1
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Default installed new catco cat.update. need help 1-22-08

i just got done puttimg on a new catco brand high flow cat with down pipe attached and its 1:46 am so im going to bed but i want to know what difference i should see with the new cat ( sealed air tight ) and also i was only getting 10 mpg city with my old cat after replacing everything i possibly could so what kind of city millage should i expect to see now.? any ideas on millage and performance i should see? thanks guys..

oh and it was alot easier then i thought it would be once i got the right cat, ( $191 )
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Old 01-18-2008, 03:05 AM   #2
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well, if your old cat was bad and possibly plugged, it could be a night and day difference.
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Old 01-18-2008, 07:35 AM   #3
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That'* it in a nutshell. Maybe no difference. Depends on whether it was the cat or not. If it was the cat, you'll have better power, too.

191 for a cat?

Shoulda cost you about $60.
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Old 01-18-2008, 09:50 AM   #4
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Quote:
Originally Posted by willwren
That'* it in a nutshell. Maybe no difference. Depends on whether it was the cat or not. If it was the cat, you'll have better power, too.

191 for a cat?

Shoulda cost you about $60.
yeah $191 for a catco brand cat with header pipe ..was the only 1 could find local also

and im pretty sure it was my cat as it always smelled like rotten eggs. and my gas was horrible..
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Old 01-18-2008, 10:32 AM   #5
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Ebay is your best friend. I picked up a cat, brand new, for 30 shipped. I know which one you are talking about though, and I have seen prices for those go for about 90.
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Old 01-18-2008, 01:05 PM   #6
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Quote:
Originally Posted by sandrock
Ebay is your best friend. I picked up a cat, brand new, for 30 shipped. I know which one you are talking about though, and I have seen prices for those go for about 90.
i bought the $90 marmount brand cat from ebay for my 95 and it did not fit..

trust me i am the ebay king.. i could teach people stuff about ebay that they never knew..
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Old 01-18-2008, 03:38 PM   #7
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Old 01-18-2008, 04:08 PM   #8
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Quote:
Originally Posted by phatklan
that is only the cat for $70.. i can get that one for $60

but i got a new cat with the down pipe/ header pipe and flange gasket and new bolts ,springs and nuts as well as 2 2 1/2 clamps.. and a warranty.


oh and i just came back from a lil run and man ill tell you its a HUGE difference in performanc, torque and all around power and now i just have to fill my tank and test my new mpg. (expecting to see a HUGE increase from 10 mpg..
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Old 01-18-2008, 08:38 PM   #9
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That'* great! Your old cat must have been on the way out.
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Old 01-18-2008, 10:47 PM   #10
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Quote:
Originally Posted by Drunken Sailor
That'* great! Your old cat must have been on the way out.
it was shot man.. bad millage, bad smells, and funny noises.. so yeah im very happy now..
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