N2Ojunky

I am installing a wideband air/fuel gauge and I'm not sure where to put the O2 sensor. I have long tube headers that go into a Y pipe, then runs back. My question is should I put it behind one of the headers and if so which one. Im just wondering where other people put theirs. Thanks

nj02z

iTrader: (6)

Mine is on the passenger side header after the o2 sensor.

redtan

iTrader: (5)

As close as possible to the header collector and on the driver side.

Anywhere from 9 o'clock to 3 o'clock positions.

mikh338

iTrader: (16)

When I first put mine in I had it right behind collector on passenger side and it didn't read right it always ran crazy rich readings and the wideband would just blank out. Wot reding we're correct but that's it. I moved to driver side behind collector and now it reads much more accurately or so it seems atleast . Wot is right on as well

mikh338

iTrader: (16)

And yes make sure it's from 9-3 position so water doesn't get on the sensor keep it up as high as possible

N2Ojunky

Thanks guys, it was installed on the driver side not far behind the stock sensor on the inner side of the header at about 3 o'clock I will finish the install soon and I will post how it is reading.

conan

iTrader: (5)

I installed my sensor in the merge of the Y pipe, so it reads both sides of the motor. Any time you get the car tuned on a dyno they stick their wide band in the tail pipe... Reading both sides of the engine.

https://camaroversion20.shutterfly.com/421

LilJayV10

iTrader: (39)

I have often wondered this.

mikh338

iTrader: (16)

They stick it there because it's an easy access spot. How else are they going to hook it up unless you have a bung they can tap into lol

mikh338

iTrader: (16)

Has nothing to do with a y pipe setup or reading both sides

Rise of the Phoenix

iTrader: (27)

Placed mine in the O2 sensor bung on the driver side header. OLSD tune though.

conan

iTrader: (5)

I understand they put the wide band in the tail pipe because its the easiest place to access. So with that clear again, the tune in your car was based on that reading (after the merge) . Placing the wide band on one side or the other will not yield the same reading. Unless you are going to put one on each header collector, or have the tuner use your wide band location your going to be getting a different reading than the one the car was tuned too in the tail pipe.

What has nothing to do with a y pipe setup or reading both sides ?

FAD2BLK93

Unless u want to install 2 sensors, one for each side. Whats the point in monitoring just one side??? As for tuning u need to look at both sides separately, as for just a general eyeball on the motor, mine will be where the y merges.
Why would someone pick the left or right side? One over the other. Please explain your decision making process. Thanks

Rise of the Phoenix

iTrader: (27)

I think it's because you want it closer to the headers than where you're going to be putting it, but don't hold me to that.

spy2520

iTrader: (3)

Cant individually tune each bank, so seeing both banks on the wideband doesn't make much difference.

You effectively tune "the engine", and in closed loop a correction is applied per bank, you don't have control over the correction, only of the base tables they are "correcting". ie. only one VE table and only one MAF table. Any variation bank to bank is handled by trims.

Picking one side over the other shouldn't make a difference. Both banks ideally would be seeing the same airflow etc, so they ideally should require the same fuel. It wont be 100% though, hence the trims. Using one bank as a reference is fine.

TexomaMan_X2

So what your saying here is putting wide band bung on each header is useless? Could you tune driver side where it looks good then swap to the passenger side to see what its showing and make adjustments that way and meet a median between both? Im new at this so just asking.

redtan

iTrader: (5)

It's useless in the sense of actual tuning, but it's not useless in the sense of monitoring your car.

Say for example you have a clogged injector on the passenger side. When you go WOT, all the WB is reading is the driver side values which will look good...and you will never see the huge lean issue that is happening on the other side and you end up with a busted engine.

Not saying that you absolutely need dual widebands, but they are not useless to have on both for safety reasons.