clogged cats question
Thread Starter
Member
Joined: Mar 2014
Posts: 183
Tsuiso with my Japanese Friend! - YouTube
Look at these sick fks
But anyways I been on this site for about a month everyday.I need to rest my mind. I got a lot of answers from you guys. And I got plenty to do to my car. I appreciate all ur help. I learned a lot . This site is pretty dope. Keep up the good work .il be back when its time to do suspension. Maybe even brakes.
Look at these sick fks
But anyways I been on this site for about a month everyday.I need to rest my mind. I got a lot of answers from you guys. And I got plenty to do to my car. I appreciate all ur help. I learned a lot . This site is pretty dope. Keep up the good work .il be back when its time to do suspension. Maybe even brakes.
Last edited by NmexMAX; Apr 16, 2014 at 06:52 AM.
Gutting the precats will not give you any kind of overbearing rasp. You will probably be the only person that would ever notice that there is any extra rasp. Especially if you have the Megan catback.
Senior Member
Joined: Dec 2008
Posts: 1,836
From: NYC
Werd. Gutting the precats won't change rasp much, if anything at all. It may increase drone though.
This is true, but the Maxima has decent enough insulation that even that isn't too bad. Long story short, it definitely will not sound anything like a bumblebee in a coke can.
FED spec have both precats integrated as part of the Y pipe. Aftermarket Y pipe eliminates both precats.
FED SPEC: OEM on right (with both precats) and aftermarket on left
CALI spec has ONE precat as part of the Y (bank 1) and one attached to headers of car. Aftermarket Y eliminates one precat (the one integrated into the Y)
OEM in front, aftermarket in rear. Note the front bend in the fed that is not in the Cali...this is where the pipe connects to the precat in the Cali cars.
No.
FED spec have both precats integrated as part of the Y pipe. Aftermarket Y pipe eliminates both precats.
FED SPEC: OEM on right (with both precats) and aftermarket on left
CALI spec has ONE precat as part of the Y (bank 1) and one attached to headers of car. Aftermarket Y eliminates one precat (the one integrated into the Y)
OEM in front, aftermarket in rear. Note the front bend in the fed that is not in the Cali...this is where the pipe connects to the precat in the Cali cars.
FED spec have both precats integrated as part of the Y pipe. Aftermarket Y pipe eliminates both precats.
FED SPEC: OEM on right (with both precats) and aftermarket on left
CALI spec has ONE precat as part of the Y (bank 1) and one attached to headers of car. Aftermarket Y eliminates one precat (the one integrated into the Y)
OEM in front, aftermarket in rear. Note the front bend in the fed that is not in the Cali...this is where the pipe connects to the precat in the Cali cars.
FMFS, search people./
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
Junior Member
Joined: Feb 2013
Posts: 52
From: King of Prussia
FMFS, search people./
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
http://forums.maxima.org/5th-generat...ht=gutted+cats
Joined: May 2016
Posts: 17
From: North Carolina
Sorry to beat a dead horse guys, but I have a 02' 6-spd that I am wanting to gut the pre-cats/add anti-foulers to.
I talked to a guy who had previously worked at Nissan for 9 years, before he opened his own exhaust shop in NC. I was telling him what I wanted to do and he said that gutting the pre-cats and adding anti-foulers would fool the computer for a couple months, but it would eventually short out the computer - or fry it.
So I wanted to ask you guys how your cars have been holding up since you gutted the pre-cats? Is everything holding up good, or is the car giving you problems??
Any comments would be greatly appreciated!
I talked to a guy who had previously worked at Nissan for 9 years, before he opened his own exhaust shop in NC. I was telling him what I wanted to do and he said that gutting the pre-cats and adding anti-foulers would fool the computer for a couple months, but it would eventually short out the computer - or fry it.
So I wanted to ask you guys how your cars have been holding up since you gutted the pre-cats? Is everything holding up good, or is the car giving you problems??
Any comments would be greatly appreciated!
Member
Joined: May 2017
Posts: 222
From: Hudson, NH
I don't see how that could be true. The O2 sensors are sending a signal, pass or fail. Throw up a code. If you gut the cat, the shell should be cooler because the exhaust gasses pass right by instead of passing through red hot catalyst. I don't see how anything could melt or fry.
Unless using the nonfouler/extender on the rear O2 sensor causes the wires to come in contact with something hot. Or become exposed and get shorted by road debris. But even then I would expect a code or a blown fuse. Not much more.
Unless using the nonfouler/extender on the rear O2 sensor causes the wires to come in contact with something hot. Or become exposed and get shorted by road debris. But even then I would expect a code or a blown fuse. Not much more.
Sorry to beat a dead horse guys, but I have a 02' 6-spd that I am wanting to gut the pre-cats/add anti-foulers to.
I talked to a guy who had previously worked at Nissan for 9 years, before he opened his own exhaust shop in NC. I was telling him what I wanted to do and he said that gutting the pre-cats and adding anti-foulers would fool the computer for a couple months, but it would eventually short out the computer - or fry it.
So I wanted to ask you guys how your cars have been holding up since you gutted the pre-cats? Is everything holding up good, or is the car giving you problems??
Any comments would be greatly appreciated!
I talked to a guy who had previously worked at Nissan for 9 years, before he opened his own exhaust shop in NC. I was telling him what I wanted to do and he said that gutting the pre-cats and adding anti-foulers would fool the computer for a couple months, but it would eventually short out the computer - or fry it.
So I wanted to ask you guys how your cars have been holding up since you gutted the pre-cats? Is everything holding up good, or is the car giving you problems??
Any comments would be greatly appreciated!
that's too much of a broad statement, i think what he meant is your messing with the integrity of things and there's no guarantee once you commit , but eh... its been workin fine for now, fingers crossed !!!! had shops even work on things around where i spliced in the O2 sim (under engine cover to the right bot corner) and probably have had to move the senor around and what not too, i thought about it after and was like ok well they must of seen it or taken notice to not mess it up too much, because its still workin like a charm... fingers crossed knock on wood.
Joined: May 2016
Posts: 17
From: North Carolina
I don't see how that could be true. The O2 sensors are sending a signal, pass or fail. Throw up a code. If you gut the cat, the shell should be cooler because the exhaust gasses pass right by instead of passing through red hot catalyst. I don't see how anything could melt or fry.
Unless using the nonfouler/extender on the rear O2 sensor causes the wires to come in contact with something hot. Or become exposed and get shorted by road debris. But even then I would expect a code or a blown fuse. Not much more.
Unless using the nonfouler/extender on the rear O2 sensor causes the wires to come in contact with something hot. Or become exposed and get shorted by road debris. But even then I would expect a code or a blown fuse. Not much more.
Joined: May 2016
Posts: 17
From: North Carolina
not at all man, it's pretty freaking legit !! i have had mine for 3-4 years.....no issues what so ever.
that's too much of a broad statement, i think what he meant is your messing with the integrity of things and there's no guarantee once you commit , but eh... its been workin fine for now, fingers crossed !!!! had shops even work on things around where i spliced in the O2 sim (under engine cover to the right bot corner) and probably have had to move the senor around and what not too, i thought about it after and was like ok well they must of seen it or taken notice to not mess it up too much, because its still workin like a charm... fingers crossed knock on wood.
that's too much of a broad statement, i think what he meant is your messing with the integrity of things and there's no guarantee once you commit , but eh... its been workin fine for now, fingers crossed !!!! had shops even work on things around where i spliced in the O2 sim (under engine cover to the right bot corner) and probably have had to move the senor around and what not too, i thought about it after and was like ok well they must of seen it or taken notice to not mess it up too much, because its still workin like a charm... fingers crossed knock on wood.
That’s good to hear and it is a very broad statement!
I only called the guy to see if he’d just replace all the bolts (top & bottom), bc I’m not sure what to use to break those things loose. They are so rusted, it looks like they were welded together. I tried using a cut-off wheel, but didn’t have much luck. I think I saw where somebody had used a sawzall to get the bolts off, so I may go that route.
Thanks for the reply man!
Joined: May 2016
Posts: 17
From: North Carolina
not at all man, it's pretty freaking legit !! i have had mine for 3-4 years.....no issues what so ever.
that's too much of a broad statement, i think what he meant is your messing with the integrity of things and there's no guarantee once you commit , but eh... its been workin fine for now, fingers crossed !!!! had shops even work on things around where i spliced in the O2 sim (under engine cover to the right bot corner) and probably have had to move the senor around and what not too, i thought about it after and was like ok well they must of seen it or taken notice to not mess it up too much, because its still workin like a charm... fingers crossed knock on wood.
that's too much of a broad statement, i think what he meant is your messing with the integrity of things and there's no guarantee once you commit , but eh... its been workin fine for now, fingers crossed !!!! had shops even work on things around where i spliced in the O2 sim (under engine cover to the right bot corner) and probably have had to move the senor around and what not too, i thought about it after and was like ok well they must of seen it or taken notice to not mess it up too much, because its still workin like a charm... fingers crossed knock on wood.
As far as the exhaust noise goes....I understand that it will be a little louder and have a different tone, but is it loud all the time or just at WOT? I guess the main thing, is will it be much of a difference, or a big difference at idle and crusing speeds? I’m probably just going to tell the guy to get er done, bc I just don’t have time to do it on my own.
Last edited by NISSMAX02; Mar 8, 2018 at 10:23 AM.
As far as the exhaust noise goes....I understand that it will be a little louder and have a different tone, but is it loud all the time or just at WOT? I guess the main thing, is will it be much of a difference, or a big difference at idle and crusing speeds? I’m probably just going to tell the guy to get er done, bc I just don’t have time to do it on my own.
i hate loud obnoxious mufflers.
Joined: May 2016
Posts: 17
From: North Carolina
That’s awesome, because I’m not a big fan of loud exhaust either - mine is all stock too. I’m going to try the spark plug anti-foulers bc I can’t find anything online for the 02 sims. Preciate the replies man - very helpful!!
Joined: May 2016
Posts: 17
From: North Carolina
https://www.ecstuning.com/b-vibrant-...iABEgL61vD_BwE
Thread
Thread Starter
Forum
Replies
Last Post
JoshG
4th Generation Maxima (1995-1999)
51
Sep 21, 2015 10:41 PM
pears
5th Generation Maxima (2000-2003)
15
Sep 18, 2015 05:25 AM
Justin Kroll
5th Generation Maxima (2000-2003)
7
Sep 2, 2015 11:06 AM