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so this part just partially dropped from underneathe my 2003 monte carlo

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Old Apr 22, 2013 | 02:46 PM
  #11  
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im a click away from purchasing this one online , pending you guys convince me otherwise

Direct Fit Catalytic Converter by Maremont not for Sale in California 652064 | eBay

does is seem decent? the guy suggested i get a "direct fit" and said it was way better than the weld on type ....... also that he would charge me an hour's labor instead of another $200 since they are easier to put on. what do you guys think ?
 
Old Apr 22, 2013 | 03:04 PM
  #12  
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I'd rather see you spend your money on this:

ZZPerformance - ZZP Downpipes #ZZ-GPDP

Since the one you linked to, says not for sale in CA, means that the cat on there probably isn't that great and will throw a p0420 code anyway. So you might as well get the good ZZP Downpipe and deal with the code, as opposed to what looks like a crimped steel downpipe that is just as restrictive as stock and have a code.
 
Old Apr 23, 2013 | 06:55 AM
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Originally Posted by ChibiBlackSheep
Since the one you linked to, says not for sale in CA, means that the cat on there probably isn't that great and will throw a p0420 code anyway.
This simply is not true. California has stricter emission laws then the other 49 states, so replacement parts for cars driven in that state have to meet higher standards. Although this particular part won't meet those standards, it will meet the standards of the other 49 states.

Originally Posted by ChibiBlackSheep
So you might as well get the good ZZP Downpipe and deal with the code, as opposed to what looks like a crimped steel downpipe that is just as restrictive as stock and have a code.
To say it will throw a code simply because it doesn't meet Cali specs or crimped instead of mandrel bent is ridiculous. Going off of track records I'd say if he installs a ZZP downpipe he is guaranteed to throw a code. That is unless of course the OP spends even more money and has his PCM reprogrammed to eliminate the code.

OP - The pipe you linked to will work fine. Walker and Magnaflow also make replacement pipes that meet OE spec. If you prefer a mandrel bent pipe versus crimped (very slight increase in flow) go with the Magnaflow. I installed a Magnaflow a little over 1.5 years ago and have not thrown any codes whatsoever.
 
Old Apr 23, 2013 | 07:35 AM
  #14  
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If your cat clogged up again I think I would be looking for the reason there clogging before spending money on another
 
Old Apr 23, 2013 | 08:39 PM
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this is the first time it clogged ..... the gentlemen at the auto repair service didnt unclog or replace it ........... all they did was weld it back together ....... so in essence they didnt perform a deserved surgery ..... they just slapped a band-aid the situation and sent me on my way.
 
Old May 1, 2013 | 09:56 PM
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Just had a new direct fit cat installed ...... Same violent shaking when accelerating ..... Starts at 30mph - 40mph ..... Smooths out around 55-60mph ..... Picks back up with the shaking at 70mph on up. Very confusing ..... I'm thinking it has zilch to do with the cat. Maybe alignment ..... Also I must note that regardless of how fast I'm going , if I take my foot OFF the accelerator it completely stops shaking.
 
Old May 1, 2013 | 10:51 PM
  #17  
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Maybe misfiring, go to autozone and get the PCM scanned for codes. It could be a lot of things. Plugs, wires, fuel filter, air filter, various sensors.

Have you inspected your suspension, lug nuts, wheel bearings, or CV axles?
 
Old May 3, 2013 | 09:56 PM
  #18  
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codes are clean since putting new cat on .......... judging from research , the problem is leaning heavily towards the axles being the culprit as it appears to be the exact same symptoms reported by other monte owners ......... bummer
 
Old May 4, 2013 | 12:47 AM
  #19  
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It's not that bad. Axles are what, 100 bucks a pop? And it's really not that hard to do.
 
Old May 4, 2013 | 07:10 AM
  #20  
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i found some cv axles that i can purchase at a pretty good rate. how difficult would it be for a first timer to change his own cv axles ?
 



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