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05-05-2013
Today i noticed that my exhaust smells bad like rotten eggs. What looking what in can do to fix it. Looked online and it say a multiple of things, Conveter, o2 sensor, maf sensor, etc... Was hoping if anyone knows this issue and knows how to fix..
PS.... this is supercharged so i run premium gas in it all the time
05-05-2013
has there been a new cat installed ?? mine did for a wile right after puting a new cat in
05-05-2013
Your cat is probably bad.
05-05-2013
Definitely the "conveter"
05-05-2013
catalytic converter
05-12-2013
Ok. So i went on ZZP and they have a converter like this... ZZPerformance - Catalytic Converters #ZZ-CATC
Would this have to be welded on or just use a bracket to hold it on?
05-12-2013
Your cat's got an hairball, replace it. Yes you need to get its tail and head welded. Make sure to skin both ends nicely.
05-12-2013
Yep its the cat
05-12-2013
You could just buy a catted dp from zzp. It take like 30 min to swap it.
05-12-2013
ok. so does not replacing it hurt the car? I wont be able to get it for about a month. Ill get the direct fit one though
05-12-2013
Ok so found a downpipe off road 2.5 with o2 bung. Is this too loud to run on streets and does the o2 sensor simply plug into the bung with no error codes?
05-12-2013
You might need an o2 ext depending on the dp. You'll get a p0420 code running catless.
05-12-2013
So i would have to flash the pcm?
05-12-2013
No.. Go to the parts store and find a 2 pack of spark plug non foulers(they are like $5). You need to drill a hole in one(believe its a 1/2 in drill bit) and leave the other as is. Screw your o2 sensor into the one you drilled a hole through, then screw that one into the untouched one. Put that into the o2 bung and you should be good. Basicly it limits the ammount of exhaust that can hit the o2 sensor simulating you actually having one.Originally Posted by daltman360
05-12-2013
Do you know if they make a 2004 grand prix O2 Emulator just to make things easier?lol
05-13-2013
Its not hard.... Takes 10 minutes
05-14-2013
Just going to wait until next month and get the 3' zzp down pipe and 3" exhaust. Would i see any HP increase?
05-14-2013
Don't get the exhaust just get the dp
05-14-2013
Will the 3" down pipe still work when everything else is still stock?
05-14-2013
$5 o2 cheater/non fouler how-to - evolutionm.net
^ i know its not our cars but its the same thing. Takes 10 min and only $5, well worth it.
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