3rd Generation Maxima (1989-1994) Learn more about the 3rd Generation Maxima here.
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universal cat converter

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Old Jul 5, 2010 | 08:59 PM
  #1  
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universal cat converter

im having a hard time deciding which one to buy since this is all im missing
to get my whole exhaust done. since they have to do some welding i
thought i can i can buy a universal 1. direct fits are too much money.
which one should i buy? most votes on the poll will convince me.

1.
http://cgi.ebay.com/ebaymotors/ws/eB...K%3AMEWAX%3AIT

or

2.
http://cgi.ebay.com/ebaymotors/ws/eB...ht_2375wt_1167
Old Jul 6, 2010 | 05:23 AM
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I don't think either of those are real cats. Just so you know.
cats are expensive, for a reason.
Old Jul 6, 2010 | 06:24 AM
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Originally Posted by BenStoked
I don't think either of those are real cats. Just so you know.
cats are expensive, for a reason.
I bought a real 3rd gen cat from Cliff's parts car...immaculate like new. No vote.

Last edited by Augustus Maximus; Jul 6, 2010 at 06:44 AM.
Old Jul 6, 2010 | 08:43 AM
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Originally Posted by Augustus Maximus
I bought a real 3rd gen cat from Cliff's parts car...immaculate like new. No vote.
these would still work just like ur's i bet and these are new not "like new"


link?
Old Jul 6, 2010 | 08:47 AM
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Originally Posted by BenStoked
I don't think either of those are real cats. Just so you know.
cats are expensive, for a reason.
i have an exhaust leak and it's coming from my cat cuz it old n rusted.
i have my new y-pipe and my new resonator pipe dat goes all the way to the muffler and i have a new muffler. i jus want to get it all done @ the same time cus that smell is driving me nuts, plus one of these could be a temp till i buy a direct fit.
Old Jul 6, 2010 | 02:17 PM
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You can get a direct bolt on cat from rock auto for about $100... If you won't even pay that for proper emissions equipment then don't bother..

Number two is at least a "real" cat, so get that if anything. But then you'd need to get flanges welded onto it which could cost you ~50 bucks..

Last edited by James92SE; Jul 6, 2010 at 02:19 PM.
Old Jul 6, 2010 | 05:25 PM
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Originally Posted by Augustus Maximus
I bought a real 3rd gen cat from Cliff's parts car...immaculate like new. No vote.



I was on the fence if I wanted to sell it because it was so nice.

The same with the exhaust. Someone wanted to buy just the chrome tips, but when I got underneath the car it was totally perfect and I couldn't bring myself to take it apart. The whole cat-back is being stored, along with the interior (front, rear seats and center console w/armrest) because it would have broken my heart to send them to the scrap yard.



To the OP: I would suggest getting everything correct that bolts on. If you have a y-pipe and the cat back with the correct flange, you should not have to do any welding (except maybe the muffler or any custom piping past the cat. I would make sure the correct flange is there so you could put in the stock cat if you can find one.

I am sure warpspeed sells a high flow cat that bolts on directly with no welding or you can check junkyards for a stock one.
Old Jul 6, 2010 | 06:04 PM
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Originally Posted by Cliff Clavin


I was on the fence if I wanted to sell it because it was so nice.
Consider this...it has a good home with this here VE fanatic. In fact everything I got from you is up and working quite nicely .
Old Jul 6, 2010 | 06:56 PM
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I went with a magnaflow 2.5" I don't have to worry about emissions. Think it cost me around $70 plus shipping.
Old Jul 6, 2010 | 06:57 PM
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k checked out rockauto.com for a direct one and the prices are good. i had went to napa and dey where saying 2hundred sumthing. getting a direct fit next week

WALKER Part # 15678

Last edited by nyc_ink; Jul 6, 2010 at 07:02 PM.
Old Jul 6, 2010 | 07:00 PM
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Originally Posted by akurtzer57
I went with a magnaflow 2.5" I don't have to worry about emissions. Think it cost me around $70 plus shipping.
stock pipes are 2.0, wont the 2.5 cause it to not flow properly?
jus asking
Old Jul 6, 2010 | 07:12 PM
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Originally Posted by Cliff Clavin

I am sure warpspeed sells a high flow cat that bolts on directly with no welding .
warpspeeds cat is 2.5 and all my exhaust parts are 2.0
Old Jul 6, 2010 | 08:50 PM
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Originally Posted by nyc_ink
warpspeeds cat is 2.5 and all my exhaust parts are 2.0
Again the warpspeed ceramic or stainless steel are available with welded on flanges and will bolt directly to the Oem ypipe and catback, you'd have to be on drugs to weld in anything like the cat.....if you ever need to disassembly your exhaust during maintenance you're focked!!!!! 2.5" are availalbe.....If you do get option #1 get it in a 2.5" design and sent it to Warpspeed for some flanges.....
Old Jul 6, 2010 | 09:14 PM
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I bought a hi flow cat from someone a few years back and stuck the OE cat in the chop saw and used it for flanges. voila. but then again I have the tools and skills to weld together my own exhaust....
Old Jul 6, 2010 | 09:35 PM
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I was trying to keep it simple for him Matt!
Old Jul 7, 2010 | 12:07 AM
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i never had a cat problem so i wouldnt know. this is a 1st for me. no need for the sarcasm like i was born to know these things u guys seem to experts on. this forum is for helping each other out, right? ok thats what i thought. if u have knowledge of something u direct the next person in the right path instead of tryna sound smart n not helping at all.
Old Jul 7, 2010 | 04:05 AM
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Get the bolt on...you don't need to be a welder and you don't nobody from the old boy's club keepin it simple for you man. Sometimes I feel like driving my Max up a few ***** around here.

.
Old Jul 7, 2010 | 06:04 AM
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Originally Posted by Augustus Maximus
Get the bolt on...you don't need to be a welder and you don't nobody from the old boy's club keepin it simple for you man. Sometimes I feel like driving my Max up a few ***** around here.

.
yea bruh i found one for $100. lol its all good
Old Jul 7, 2010 | 06:31 AM
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Originally Posted by nyc_ink
yea bruh i found one for $100. lol its all good
That's good. I was just trying to be helpful. In the long run, it's best if you can bolt stuff on. Once it's welded together (like a cat to your y-pipe) it's a lot harder to do anything yourself.
Old Jul 7, 2010 | 06:42 AM
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Originally Posted by Cliff Clavin
That's good. I was just trying to be helpful. In the long run, it's best if you can bolt stuff on. Once it's welded together (like a cat to your y-pipe) it's a lot harder to do anything yourself.
yea it makes sense, i appreciate it. its that i neva had this problem b4 wit any car so its all new to me. reason i was i looking into a universal was cuz the guy @ the muffler shop said he can cut the flange off my y-pipe and weld it to the uni-cat and also cuz they where cheaper than what napa was charging for a cat.

can i do the y-pipe and cat my self since its bolted on? or should i just get it all done by the shop since i have to get my resonator pipe n muffler put on?
Old Jul 7, 2010 | 06:50 AM
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y-pipe and cat are basic bolt ons. no need to have a shop charge you labor when you can do it yourself.
just remember the pb blaster.
Old Jul 7, 2010 | 06:58 AM
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Originally Posted by BenStoked
y-pipe and cat are basic bolt ons. no need to have a shop charge you labor when you can do it yourself.
just remember the pb blaster.
so just jack the car up on both side or should i buy those ramps walmart has for $40?

btw wats a pb blaster?
Old Jul 7, 2010 | 07:03 AM
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jack stands, or ramps, either/or. do not work under jacks.
pb blaster is like wd-40, a lubricant, but it's thicker, and seems to penetrate rusty bolts a lot better. should be available at most auto parts stores.
Old Jul 7, 2010 | 07:12 AM
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Originally Posted by BenStoked
jack stands, or ramps, either/or. do not work under jacks.
pb blaster is like wd-40, a lubricant, but it's thicker, and seems to penetrate rusty bolts a lot better. should be available at most auto parts stores.
lol true, dont want a car falling on me
ill go to autozone n check if dey have it.

do i rinse the y-pipe? like the inside of it jus incase it has metal flakes? i remember reading sumthin like dat but im not sure.
Old Jul 7, 2010 | 08:32 AM
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it's simple to unbolt and bolt on new when the bolts are in good shape. when the bolts are so rusty that they don't look like a bolt anymore and you have to saw them off that's when it gets interesting. it's doable...just a little more work.
since the cars are so old prepare to do that when you're working on the exhaust.

you don't have to "rinse" out the exhaust. if you want you can do it...but it's really not a huge deal unless you have a lot of crud in the pipes.
Old Jul 7, 2010 | 11:33 AM
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we don't really get much rust here, so all of the y-pipes I have done have been very easy to do myself. Don't forget you need to get the gaskets, too. They are cheap at NAPA.
Old Jul 7, 2010 | 11:58 AM
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yea it was a new york car so its rusted to hell lol
im in south carolina now so i wont have to worry bout it once its all changed.
my y pipe came with the gaskets so i guess ill probably need 1 more.

b4 i drove down here i changed all the belts, water pump, control arms, inner and outter tie rods. im looking into gettin good struts plus i wonna drop the car once i put 18''s on her.

all i really need now is replace 2 injectors and all 4 motor mounts, i have all the parts jus need to get em done.
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