ytf did nissan do that shit...did they actually think we were gunna go through all that trouble just for a aftermarket header?...not even the nismo header w/o cat works right...its bs if u ask me

Im thinkin it has something to do with emissions. If they make the emmissions correct on the stock setup, and then add another cat after both sensors=less emmisions.
Its still retarded. I think the Nismo Exhaust should at least have a place where the bung goes where gurov pointed out.

maybe im just super ghetto, but I just cut all the sensors off and used heatshrink to cover the end of the wires... btw ses light doesnt bother me, neither does the blinking guy getting owned by the airbag


Will

Knight Rider wrote:

maybe im just super ghetto, but I just cut all the sensors off and used heatshrink to cover the end of the wires... btw ses light doesnt bother me, neither does the blinking guy getting owned by the airbag
Will

cute02spec wrote:

Hahah, why exactly is your airbag light blinking?  That is one light I wouldn't want going off... SES is alright...

How is your SRS going off? Did you ever replace your steering wheel? I wouldnt want that going off either.

I'd rather sit back and get his by a bag of air coming at me at 200mph then digging my legs into the engine.

I think they should have the airbag thingies in all cars like they do in trucks where you can turn it on and off with a key.

Im not trying to be a smart ass but seriously, it might be the dirty air in chicago.

Daemos wrote:

I got a better way...

instead of reloacating and what not.  This is the Ghetto fab way of doing it.

I put on a ghetto sim around the 2ndary O2 for protection, then I wrapped the whole thing with some aluminum foil, and zipped tied it to some hoses in the engine bay.

Haven't had an SES light ever!

I was too lazy to get a second bung whole drilled out.

i'll have to try this on heidi's car, i sure as hell should be able to get a hold of some aluminum foil.

I dont know guy, it was just an observation. Is the air really dirty enough to not make your SES light come on? Ive heard stories

05SER VED wrote:

my light is not on. i was just wondering why it wasnt on since i have no cat. i was expecting it to come on but nothing is on. If it was the air then all the cars in chicago would have their check engine lights on it wouldnt just affect the spec v's.just forget about my question ill just ask around somewhere else.

Easy guy. Sorry if I frustrated you or anything like that. I didnt mean to do that.

So your o2 bung is in the exhaust or out of it with a sim on it? If it is in, then it would be more likely that the light will be off. I really dont think anything is wrong. As long as the ECU is getting a signal that is reasonably close to what its supposed to read at, then there will be no light. At least thats what i think is happening. Dont worry about it. If there is no light, then theres nothing wrong, right? Your car is good.

Note on Air Bags.  The passenger airbag also shatters your windshield.  The seatbelts lock up and are useless once airbags deploy.  It's all part of the system.
I got ran into a drainage  canal in Feb. by a drunk . $7500 later my car is back and running strong.

cute02spec wrote:

I want to disconnect my passenger air bag... I rarely have passengers, and don't want the stupid thing deploying when there's no one even sitting in the seat, causing more $$$.  Kinda wanna disconnect the passenger side impact as well... I don't think there's a way to do this without having an air bag light, though.    One of those seats with a side air bag costs $1200 alone.. grrr...

My worry here is that "IF" you had a passenger and "IF" you got in an accident.  If they got hurt or killed they or  thier family would rip every last penny you never had out of your ass.... 

Hey guys what would suggest as a better way to go....
Relocating the 02 sensor or just gettin the sim? Does it affect it either way?

~X

Thanks Robbie,
I will look into it.

~X

Here's what I did. Got the info from nissan forums. The 1rst o2 sensor is in place in the bung on the DCsports header. The 2nd o2 sensor is on the straight pipe were it is supost to be but I put a antifouler in the bung then screwed the sensor into it. Havent had a ses light since and the air fuel wasn't affected at all.

Well, the engine now does not have to work so hard to turn the BS, so it makes sense that it wouldnt use as much fuel to turn over now that the BS has been removed. So that could possibly be why your SES light went off.

htown wrote:

Interesting well the car feels fine plus the QR is very efficient I don't see why nissan felt the need for a damn precat

Two words:  TREE HUGGERS.


Oh noesss....!!!!!111!!!  Cars destroy the environment!!  AHHH!!!


Fucking tree huggers.  I seriously hate them and their rusted 1980s polluting Saabs telling ME to keep my catalytic convertor on my car.

where do u get a sim???

question:
i have the xs power header (i beleive) with the o2 bung in it already. I have no ses light or anyhting on......but i just bought a magnaflow exhaust....it's used and has an 02 bung welded on. My questions are as follows:
1) did the magnaflow come stock with an 02 bung
2)should i plug it (the bung in the exhaust) or will i need to use it. If i'm not changing anyhitng with the cat (it's a catback exhaust i bought) and everythign is copesetic as is...then why would things change?

some help would be mucho appreciated...

thanks

ok a little background on why your check engine light would come on with a catless header, i figure it would help if you knew how the system worked. the 02 sensors do not measure your emissions, they merely measure the amount of oxygen in the exhaust which tell them how the car is running ie rich or lean. the first sensor is the  sensor that controls the air fuel ratio and is the only one that has an effect on your emissions and power. the second 02 sensor is there to check the effectiveness of the cat and how it does that is again measuring the oxygen content.ideally there should be no oxygen in the exhaust after the cat got through with it. the first sensor is constantly changing voltage to try and correct the af ratio so its voltage is going up and down constantly whereas the second sensor should see very little voltage change up or down and should always be a low voltage. so the ecu is comparing the two voltages and if it sees close to the same pattern between the sensors it then kicks the light to let you know the cat is not functioning properly. since you take out the cat with the header now the exhaust that was suppose to be entering the cat to get scrubbed is heading straight down the exhaust unchanged. how the ghetto sim works is it is moving the sensor out of the exhaust stream where there is very little oxygen content which means a low voltage so the ecu thinks the cat is still there doing its job.

it'd basically just be like an exhaust leak. plug it up OR get a wideband!

i have the XS header. 2 bungs on the header. 1 bung on the stock MP. plugged up the top bung on the header. 1st O2 sensor is on the "collector" part of the header. and i put the spacer on the 2nd O2 sensor on the midpipe. easy peasy.