wideband install

[gosaints420]

the instructions for my wideband say if you have a s/c you need to mount the sensor 36" from the exhaust ports but before the cats. i still have stock exhaust for now 36" is past the cats.
so where am a supposed to put it.:dontknow:

 

[RedXr]

Goes in front of cats. A respectable exhaust shop will no where it goes!

 

[ntinhri]

Not fully true.. Mines at the back o2 sensor..

 

[RedXr]

I thought since he is running stock headers, he should mount these before any emission controlled cats, that even being the front.

 

[gosaints420]

any one else want to weigh in? is their any where i could screw it in or will i have to get a bung welded in?

 

[blackx-runner]

I thought since he is running stock headers, he should mount these before any emission controlled cats, that even being the front.

that is the best place a will yield the most accurate results. But behind the first set of cats will work

 

[firetuner911]

the wide band is supposed to be 18" inches downstream from the head and the bung is supposed to be welded at a 10deg angle to the horizontal and yes that means that in order to get an accurate reading you would have to use something like AEM UEGO dual channel. this is taken straight from AEM.

Sensor Placement
A weld-in M18 X 1.5 boss is supplied for sensor installation. Mount the O2 sensor in the
exhaust system at least 18 inches downstream from the exhaust port. If you anticipate high
EGT’s (over 800C), run a turbocharger, run at high RPM for extended periods of time or plan on
running leaded race fuel then you must mount the sensor at least 36 inches or more downstream
of the exhaust port as all of these can cause the sensor to overheat. On turbocharged engines the
UEGO sensor must be installed after the turbo charger, if not, the pressure differential will
greatly effect the accuracy of the unit. In applications with a catalytic converter, the UEGO
sensor must be mounted BEFORE the converter. In applications with an auxiliary air pump, the
UEGO sensor must be mounted BEFORE the pump input to the exhaust stream. Installation
angle should be inclined at least 10° towards horizontal (electrical connection upwards, see
diagram) which prevents the collection of liquids between sensor housing and sensor element
during the cold start phase.

hope that helps, innovative also offers some great products.

 

[RedXr]

In applications with a catalytic converter, the UEGO
sensor must be mounted BEFORE the converter.



*Cha Ching!*

 

[gosaints420]

that says the same thing my instructions do but i cant mount the the thing before the cat and 36" from the port. i guess if being to close is going to cause the sensor to over heat i should mount it after the cat.

 

[firetuner911]

it only has to be 36" if you BOOSTED, otherwise its 18", mounting it after the stock cats would make it useless. the cats change the A/F ratio. and why cant you mount it in front of the cat??

 

[Torspd]

In applications with a catalytic converter, the UEGO
sensor must be mounted BEFORE the converter.



*Cha Ching!*

What if you don't have any cats?
:dontknow:

 

[firetuner911]

then its 18-20" for N/A and 36-38" for Fi

 

[gosaints420]

i will be boosted very soon!!!:top::rock: that is why i keep saying 36".

 

[RedXr]

What if you don't have any cats?
:dontknow:

:laugh: Theres always a "What if"....

I was targeting the OP's situation.

 

[firetuner911]

if your gonna be boosted soon, then your gonna need to change your exhaust and therefore just install the O2 sensor in the new exhaust. problem solved.

 

[RedXr]

OP, seems like you are trying to find loop holes in the solution. Go to an exhaust shop and ask!

 

[blastap]

When I had stock manifolds I put close to the stock location. And never had any over heating issues and I'm boosted.

 

[gosaints420]

When I had stock manifolds I put close to the stock location. And never had any over heating issues and I'm boosted.

thank you, thats all i needed to know

 

[ACEE-TL]

ok I'm not a pro at this and it might be kinda late, but according to what this says it said if you are TURBOCHARGED. Correct me if I'm wrong but turbo vehicle have more piping the supercharged vehicles and that would be the reason you would weld it 36" compared to the 18"?????

 

[off-road taco06]

Sensor Placement
Mount the O2 sensor in the exhaust system at least 18 inches downstream from the exhaust port. If you anticipate high EGT’s (over 800C), run a turbocharger, run at high RPM for extended periods of time or plan on running leaded race fuel then you must mount the sensor at least 36 inches or more downstream of the exhaust port as all of these can cause the sensor to overheat.

36" is only for people who are in HIGH RPM's more then normal and can get the EGT's above 800C or those who have no CATS. Trust me, you will be fine with 18". But i would highly recommend an exhaust specialist to install these bungs...

Good luck!