Must be something cause I had Headers and Y-pipe Cattman and that **** barely went any louder than Stock with the Stock Catback on there...Good Luck on finding the Fix....

 

The car is going on the lift today, I'm gonna take another look and see if anything sticks out as a problem.

I figured I would give everyone an update, I just had the car on a lift, and my friend noticed that the hanger on the center pipe has broken off. He doesn't have a welder, so I guess I'm gonna have to drive with it like that until I pick out a catback system.

 

Or go to any muffler shop spend 5 10 bucks and have them reweld it. Easy fix

 

I don't want just a temporary fix, the pipes are pretty rusted, and I was gonna replace them anyway, the fact that some of the hangers are broken, just makes it any easier decision to get the catback.

 

That crunch would.make me stab my eyes out

 

Dude, I've ordered two of them over the years '97 SE and '92 SE; both times it took like 3 weeks to get it. You have to call and stay on them! I have to say that both times it was well worth the wait. One of the best bang for buck upgrades that I've done. For the price, warpspeed is alright!

 

I have the pipe installed on my car already, but thank you for your input. Also I had to wait like two months before I got my pipe.

So I got a SES light this morning, I havent had time to scan the codes, but I'm pretty sure its because I didn't install antifoulers on my o2 bungs. I'm gonna pick up some spark plug antifoulers this weekend, which bungs do they need to go in?

Never mind, I found this thread,

http://forums.maxima.org/5th-generat...i-foulers.html

So I just need to find that 90 degree pipe that Tuner was talking about, and if I can't I'll just get an antifouler from AutoZone and drill it out.

I just got out of work, and I drove over to AutoZone to have the engine light scanned. I had one code P0430, I used to have P0420, but that's gone now. Does the P0430 code mean I need a new CAT?

 

P0430 is bank 2 precat. P0420 is bank 1 precat. I believe......

That sucks because with a Y pipe you are bagging the bank 1 precat......with a 430 code it might mean you have to get a new front precat. Or at least an 02 sensor.

 

I replaced two o2 sensors when I installed the Y pipe. I didn't replace the one on the exhaust manifold, do you think that one might be the culprit? And if I replace all my o2's and that still doesn't work, what are my options on replacing that bank 2 precat? Thank you.

Would just getting a new downpipe and replacing that o2 sensor fix the problem?

 

which two O2 sensors did you replace?

You should have put antifoulers on the bank X sensor 2 locations...did you? Especially with bank 1, I think you may not have. You need NO ANTIFOULER on the first sensor in bank 1, and an antifouler on the 2nd sensor (the 2nd sensor has to have a different reading than the first, or you'll throw the code).

the O2 sensor on your mainfold that you didn't replace is bank 2 sensor 1...which measures the emissions before the precat...this should not need to be changed unless the specific code is for bank 2 sensor 1. If you need to replace your bank 2 precat, good luck. Not cheap...you may even want to consider gutting it

 

I haven't installed the antifoulers yet, I had a little trouble finding them locally, and I ended up ordering them from AutoZone. Do I need to double them up and then install the o2 sensor into it? Or can I just use one antifouler per o2 bung? Also, if I end up gutting my second precat, will I need more antifoulers?

So do you think I'm getting the P0430 code because I don't have antifoulers installed yet? Or would it be because my remaining precat is clogged?

 

I don't know which bank the 0430 corresponds with...search around and find out.

But i can GUARANTEE you that without antifoulers on the rear of bank 1 you WILL get a code. Since both front and rear O2s are measuring the SAME exhaust gases. You NEED TO have the rear one offset with the antifoulers so you have a difference in measured exhaust gases.


I'm surprised you are wondering why you have O2 sensor codes, when you were told you needed antifoulers, agreed you were going to get them, and then didn't.


Search around on how to install the antifoulers...you'll find your answer.

People aren't going to keep spoonfeeding you, especially when you don't answer the questions asked of you (which O2 sensors did you replace?)

 

The car is going on a lift once I get out of work in 45 minutes, but that's only to install the catback that arrived today. So hopefully someone will chime in at some point today about the antifoulers, so I can drill them out and install them. Also, is that downpipe difficult to replace?

The only thread I found that had instructions on how to install antifoulers, had mixed info. Also, I didn't know if the 0430 code had anything to do with my Y pipe. When I looked the code up, the number one cause for it was a large vacuum leak.

 

ARe you using a cali spec Y pipe? If you are you should be throwing NO CODE. The only scenario in which a cali spec y pipe would throw a code is in fact if your bank 2 (by radiator) precat has gone bad. Both of your bank 1 and 2 downstream sensors should be reading a-ok if that front precat is still good because they are both mounted behind it.

If so its not the end of the world
http://www.ebay.com/itm/New-Catalytic-Converter-Front-Powdercoated-silver-Infiniti-I30-2001-2000-/350712527400?pt=Motors_Car_Truck_Parts_Accessories&fits=Year%3A2000%7CModel%3AMaxima&hash=item51a8187a28&vxp=mtr

 

Yes my car has California emissions.

Probably a stupid question, but that pre cat you posted says its for the I30, will it work fine for the Maxima?

 

yes it will

 

Yep.......and if you want a name brand like I did you can get a Walker on ebay as well for under $200 shipped....so like i said...pain in the butt..but not the end of the world. If you have this brand new shiny Ypipe it wouldnt hurt to have a brand new shiny front precat as well....

 

It looks like its gonna be a ***** to change this precat. Because its in a tight spot. What would be a benefit to having the Walker precat over the generic one you should me? Other than the name brand that is.

I just finished installing the catback. Fitment was perfect, the sound is amazing, and there's pretty much zero drone. And there's no more rattle/crunch sound that I was talking about earlier. Now I need a new highflow cat, and bank 2 precat, and hopefully I'll be done.

I'll post some pics as soon as I can remember how to use photobucket.

 

If you are putting a pre cat on the front, or have a working one, you DO NOT need anti foulers.
You just move the right bank (bank 1) secondary O2 up next to the bank 2 secondary O2.

You only need anti foulers when deleting both pre cats

Aka:

Move this





To here




You just weld another bung in the pipe. If you do it neatly, you don't even have to extend the O2 wiring.

 

Pretty sure Warpspeed last time I checked had two bung locations downstream on the cali version....thats why Im kinda confused...lol.

 

I would prefer not to have to make a new o2 bung in my downpipe. This is why I would like to use antifoulers. I'm gonna try to upload pics in the morning using my laptop, maybe I just can't do it with my phone?

There are two o2 sensors on the Warpspeed Y pipe, one before each flange. I replaced both of those sensors already, I didn't touch the sensor that is mounted on the downpipe.

 

Cattman does this usually. Warpspeed I dont know about.

Either way, you can just put it in the front of the Y pipe, it doesn't have to go right next to the other secondary O2 for the Front, it can go behind it in the Y pipe.


Read above. The arrow just was to denote that it was AFTER THE FRONT CAT, as close as possible. You can put it in the Y pipe if you want.
I pointed there because you said you were getting an HFC to replace the stock one, and it's easiest to do this while the part is on the bench, not on the car.
You can do it either way.


As far as anti-foulers IN STEAD of this, that's great, but if you don't find the screw-in 90* style, then you could be in for issues still.
The straight ones are hit/miss, sometimes needing to be stacked (2 units) to finally work, and there's not a lot of room for that kind of shenanigans. Plus it'll be prone to breaking the longer you make it.

You can do it once properly, or do it a few times incorrectly until it works.

Your choice.

 

http://vibrantperformance.com/catalo...sort=2a&page=2

 

Thanks CJ. So I need two of the 90 degree bend o2 fittings? One for each o2 bung in the Y pipe?

 

Yup

 

I just looked at the picture on Warpspeeds website. Yes there are only two bungs in the ypipe. The reason for this is that in your stock front precat, there are already two bungs. So there is only 1 o2 sensor that actually changes locations. Its the one that is in the front of the ugly stock ypipe......it gets moved up to the spot behind the precat. Now if your precat is truly bad like we discussed...then you should be throwing two codes. po430 and po420. If you are only throwing one, that suggests a downstream o2 sensor.

 

so the warpspeed ALREADY incorporates the movement of the rear secondary sensor to the front-most pipe (the straight pipe that hooks to the front precat)?

If so then they have already though it out and you don't need to do anything.

You DO NOT need 2 anti-foulers unless you are gutting the front precat or getting a high-flow one that won't actually do much (300 cell or less).

You don't put a anti-fouler on the primary sensors. So NO you don't put 2 on the Y-Pipe.

 

Exactly. I think if hes throwing only a po430 then hes got a bad bank 2 downstream o2 sensor.

 

So I should probably start by replacing the o2 sensor on the front precat.

 

Or a bad precat.....

Swap the rear secondary O2 sensor for the Front Secondary O2 sensor (this is the one throwing the code saying the cat is bad).

If the code persists then you need a cat.

 

Is this the sensor?

http://m.autozone.com/autozone-mobil...gcvp?id=596487

 

Wouldnt he be throwing both a p0430 AND a p0420 then, since both secondary's are behind the bank 2 precat?

 

I've decided to buy both, the bank 2 precat and the o2 sensor that's mounted on it. Can someone confirm if the sensor that I posted from AutoZone is the one I need or not?

 

In the stock setup, they are 2 different pipes. The Sensors are in the 'collector' of each bank, before the Y turns into a single exit pipe.

Unless His Warpspeed puts the Rear bank secondary O2 sensor at the FRONT of the Y pipe.
He has yet to confirm it's location.

If it's at the front and the sensors are literally side by side, then I agree, it's more likely a sensor than a cat.

 

Yes that's how it will be......he will have his regular downstream o2 near the flange of the B2 precat......when the Y pipe is put on, the downstream B1 sensor moves to the bung right behind the B2 precat one. Thus the B2 precat holds the "power" over both downstream sensors. This is how it fools the ecu into thinking everythings A-ok......UNLESS your cat is bad...then you should have two codes popping up. If hes only got one code I would assume its the sensor itself...

http://warpspeedperformance.com/yaho...132737_std.jpg

The bung on the right there........^^ is where his B1 sensor will go.

 

Downstream,left side yup that looks like its the one.
We on the org call it bank two sensor 2 but its all the same.
Why dont you get it from rockauto ? Should be cheaper the autozone

 

My new catback.





I'm sorry if my photos are too big, I didn't know how to make them smaller.

 

Yeah the pics dont do it justice, but great install looks really good !

 

Yup, 100% correct then, id replace the sensor.

 

Thank you. It took me like four hours to install the Y pipe, the catback and the two sensors.