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Old 10-27-2004, 06:29 PM   #1
Turbosdime18
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Default Cat Converter

How often is a good schedule to change out a Cat. Converter? My car is a 96 Saturn SC1 5Spd 95,000 miles and I was gonna put a new stainless cat back exhaust system but the cat looks rusty and I was wondering if I should replace it while Im down there? Also were is a good place to buy one? Are there aftermarket ones that are better?
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Old 10-27-2004, 06:34 PM   #2
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yes you should replace it...i heard flowmaster is good...you could get one from any muffler shop or look around for a more of a performance one sinse your upgrading...

nice to see another illinois person too, we growing
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Old 10-27-2004, 10:44 PM   #3
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do not change the converter for no reason besides it is rusty. if it is not broken up inside or cracked save your money.
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Old 10-28-2004, 12:21 AM   #4
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but why keep one that has that kinda mileage on it...I personally would change it, doesnt make sense to me to go through all the work and not get a better cat. Chances are its gonna go soon. I hear a lot of saturn owners change em in higher mileage, might as well get it outa the way...but hey, ur car, ur money
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Old 10-28-2004, 01:57 AM   #5
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The theory I heard cats should be changed every 60,000 miles or so depending on where you life and the fuel you use. I can tell you at 165k miles my original cat is taking a dump it rattles like no other and well the car itself is stinky, lol

Ontop of that if your opening up the EXHAUST why leave a restricted block of filter, get a high flow cat they are only about 100< depending on where you get it or hallow the one you got right now out I have heard of people doing that....
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Old 10-28-2004, 06:50 AM   #6
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Remove it and throw it as far from you as you can. I don`t know about your state, but in mine there are no emisions checks or inspections of any kind. My cat will "fall off" never to return.
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Old 10-28-2004, 11:51 AM   #7
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Mine smells after i turn off the car sometimes. But not usually when its running. Think it will need to be replaced? Actually my whole exhaust system is pretty rusty...part of the muffler is flaking off. Sounds cool though....nice little quite growl for a 4-banger....better than most fart-can equipped Hondas anyway
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Old 10-28-2004, 05:03 PM   #8
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If u remove the cat what do u do with the sensor mounted in it?

I dont know what my state checks. They hook my car up the machine through the ODBII connector and thats it. So as long as the sensor does throw a code Im fine.
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Old 10-28-2004, 09:03 PM   #9
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You can buy weld-in O2 sensor bungs. I think summit or jegs carries them. You gotta know if your state does a visual scan to see if the emissions crap is still there or not, then proceed with your plans.
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Old 10-28-2004, 09:32 PM   #10
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I just had to replace my cat at 105,000 on my '96 SL SOHC....

I went ahead and replaced it fully instead of getting rid of it, because i'm moving downtown in a few months, and they do exhaust checks there.. but i'm not sure about all the way out in plainfield...

illinois people shall take over the satty forums
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Old 10-28-2004, 09:50 PM   #11
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but why keep one that has that kinda mileage on it...I personally would change it, doesnt make sense to me to go through all the work and not get a better cat. Chances are its gonna go soon. I hear a lot of saturn owners change em in higher mileage, might as well get it outa the way...but hey, ur car, ur money


there is no reason to replace a converter that is not failing. you could put that money into something that is gonna be more of an performance improvment.
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Old 10-28-2004, 10:02 PM   #12
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Illinois does NOT do those checks...maybe in ZChicago, but Ive never heard anything about it from people up there...Dont worry about that.

and latemodel, why not replace before it fails...you can get a high performance cat, then the money is still well spent now aint it? ehh, why replace ur ECT just because its ols, why not wait until its nice and cracked and sets off your SES light, becasue that is stupid. Fix problems before they arise, saves hassle later.
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Old 10-28-2004, 10:37 PM   #13
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Illinois does do emissions testing, every car resigtired to the state of illinois goes once every two years, dispite location
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Old 10-28-2004, 10:47 PM   #14
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I'm new to Saturns and all. But I keep seeing post about people removing their cats. In my last car (1990 Mustang GT and 04 GT) this would through a check engine light or a SES light. And when this happens, the car actually goes into a limp mode. All be it, not that big of a limp mode, but it does.
Is this not the same on Saturns? Does the computer not care of there is a cat or not?

I would think that if the ODBII computer see's a bad reading on the rear sensor it would try to make some type of adjustment.

Please let me know,

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Old 10-29-2004, 12:01 AM   #15
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i see no propuse of removing the cat on any street legal car. its illegal, its toxic, it will burn the valves(IIRC) and yes, it will set a SES light in OBD2 cars, weather or not it will go in to limp mode, i don't know.

being in limp mode is even worse then removing the cat, you will say in open loop mode for ever.

i personally am thinking about replacing my cat with a cleaner one.( i didn't like what i saw on my last emission test print out, it passed, but not as well as it should have)
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Old 10-29-2004, 12:22 AM   #16
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Quote:
Originally posted by sierrap615
Illinois does do emissions testing, every car resigtired to the state of illinois goes once every two years, dispite location
Untrue...Non of our cars have ever been tested over the many years weve lived here. Its prolly been 12 yrs or so. Maybe its just chicago area. We are in the country so no one really cares.

Im 18 now, gor my drivers license on my b-day, Ive yet to do anything resemblin a test.
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Old 10-29-2004, 12:43 AM   #17
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i've done two in the saturn, one in the buick. interesting that you haven't, i'm going to ask around tomarrow, i was sure it was state-wide
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Old 10-29-2004, 01:53 AM   #18
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Quote:
Originally posted by ry92sc
The theory I heard cats should be changed every 60,000 miles
I believe federal law requires emissions related components to be covered for 80,000 miles.
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Old 10-29-2004, 03:13 AM   #19
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Where do you guys get some of these "Recommended change intervals" from? Autoparts stores? You replace the catalytic convertor if and when if actually FAILS. There is NO recommended interval. I have seen cats with well over 125K miles on them that still work just fine.
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Old 10-29-2004, 07:19 AM   #20
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I'm with you on this one Wolfman.

Mine has over 120,000 and it just passed a e-test 2 months ago.

However, I think somepeople change this out in hopes of opening up their exhaust a little bit and maybe gaining a little more ummph for the car.

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