I'll try to make this quick. The y pipe I have after installing headers doesn't have any bungs for the o2's that go on there. I have the o2 sims ready and the o2 sensors..but no bungs to plug them into... Does anyone know where I can order the bung size that will withstand the heat? I'd get a exhaust shop to weld them on. Also If I just have them weld them on where the stock ones should be I won't need to extend my o2's correct?

Mainly askin for the site where I can order them from because I have no idea where to even start looking.. And yes, I tried home-depot.

haha, thanks.

 

Most muffler shops will have O2 bungs of their own to weld on.

 

Call around, some exhaust shops keep O2 bungs in stock.

 

it be cheaper just to install the sim..my rear o2s are duct taped on top of the motor..lol

 

Mine are also ductaped on top at the moment. can u link me the link u got urs from? Or did you just ebay? I read on needing them but never actually on them, How do they plug up? Directly to the plug on the o2 or....

Also no sis light?

 

weld the bungs in and run the 02 spacers on both of the secondary sensors and ull be codeless...and u can return them 02 sims cuz u wont need them...i have this setup with the spacers now and bin codeless for a year now...want more info p.m me...i also made a thread abut in somewhere on this site lol

 

http://forums.maxima.org/general-max...e-install.html

theirs the link...i gotta update it but got any questions p.m me and will be glad to help

 

and yes if u weld the secondary 02 bungs in the closest spot of the stock location u do not have to cut or splice or lengthin any wires...thats how mine is also... =)

 

no ses light

http://www.o2simulator.com/index.php...28221ee8a175a6

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

 

he says he already has the sim, so its cheaper to just install it..

 

Last question, might seem a tad stupid but do I need 2 for both o2's? Or will one work?

 

^^ so he has the sim alredi installed but wants to use the 02 sensors? why lol

 

one sim, just make sure its dual output..has 2 white wires, 1 black and one red..

hes lol

 

lol noooo, I thought i had the o2 sims. Just the spacers though, I mistyped that. If I had them already I wouldn't worry about bungs.

The front o2 sensor that meets at the front of the y howeverrr, (here's the fun part) wouldn't budge so it's sittin on my stock y. I'm assuming I have to get that out and plug it in and have it ducttaped as well with the o2 sim to have everything running well?

Thanks for the quick replies btw

 

Ok,shi* I just realized something, The sims are for the rear... I have the front o2 that connects on the header plugged in as well as the rear that goes ONLY on the header. The ones on the y however are both not plugged in.

Will an o2 sim even help me in this case? That's why I wanted to weld bungs on. If that's making sense..

 

Should be the two middle iirc... even if u weld bungs in

 

You need both upstream o2s. Those are the ones before the y pipe. They collect info for the computer to keep the proper fuel mix.

You don't need the downstream o2s. All they do is tell if the precats are working properly and throw a code if they aren't. Obviously the precats aren't going to work again. Just get the o2 simulator and strap the o2 sensors somewhere under the hood. You still need them wired up because they're heated and the computer will notice if they're not drawing current. You'll get a code for that too.

 

You can completely eliminate the secondary o2's. Use the sim to keep the ECU happy and use (2) 10ohm 10watt resisters wired in series for each o2's heater circuit.

This way you don't have to keep your sensors just dangling there.

I run this setup and I never get codes.

Bought the resisters at Radioshack. They're ceramic and about 2 inches long.

 

Any pics????Cattman/OBX/No Name?

 

The upstream are connected, and cmax they're obx v1.

 

I have all 4 connected with no SIM and no CEL until my wires got burned lls... Jaypee has been running simless for probebly 3 4yrs now... no CEL

 

Yeah, that's a weird thing. Some people have gotten a CEL right away and some never do. I drove around for a few weeks before it threw a code and I put the sim in.

We don't have inspections here in Florida so it's not much of an issue. I was wondering if anyone has passed inspection wothout the sim in place?

 

My inspections in a while but what's getting to me is my drop in gas milage.. Lost avg of 70miles off my tank.

Also with a cel in a state that requires inspection, You can't pass. Iirc..

Man, floridas got no laws. No tint laws/inspection, and iirc no helmets needed on bikes.
Damn.
hahahaa

 

Like people have stated you need your primary o2 sensors working and your secondary o2 sensors just simulate them. And if you do not have bungs for them, tie them somewhere.
But please do not do what Hotshotvq35 did because that is just fugly.

 

lol..i aint the only one who did it this way..and then the engine cover is on, you cant see the ghetto engineering at its finest!

 

haha already done. But mine is a little less visible. And I used ELECTRICAL tape so it blends in haha. Thanks guys.
Thread closeddddd

 

The drop in mileage could mean you're running rich and need a tune after instaling the headers. Most of the time the car will run very rich after intake and exhaust mods.

You may want to use something better than tape on the o2 sensors since they're self heating. They get pretty hot and will probably wear out the tape after a while.

 

You sure you aren't losing 70 miles per tank because you are getting into the gas more often with the headers? I gained gas mileage (when driving normally *cough*) after headers and exhaust.

 

I am running rich atm. And I thought the same thing. I got on my car about the same as I did before but I'm fillin up today and going to see where that gets me. Usually I can get half a tank of city driving to 150mpg so we'll see...