wideband 02 in stock DP?

[re-rx7]

Can I weld a bung into the Stock Dp for the Wideband 02? I still have the cat and would like to keep it for now. Im not going all out power crazy i just want a fun quick car with a safe tune. Also is it possible to mount it in the stock secondary o2 bung behind the cat? How much will the afr's be skewed due to its placement behind the cat?
The car is all original except for a catback and intake. The plan is to keep it that way or close to it. Any help is appreciated.

 

[4G63_Attack]

I got my welded right after the flex section. Some other members has installed in the Stock o2 housing and have no problems with it.

 

[re-rx7]

Your saying the secondary or primary bung? Im on stock ecu so by removing the primary shit would be all over the place.

 

[ed1380]

The farther away from the Turbo the slower the response time. Like he said you can run it right in the o2 housing. All 2002+ Turbo vw/Audi run Bosch widebands right after the Turbo


If your wideband does narrowband simulation you can wire it to give a narrowband instead of the front o2. It might throw a cel though

 

[re-rx7]

The farther away from the Turbo the slower the response time. Like he said you can run it right in the o2 housing. All 2002+ Turbo vw/Audi run Bosch widebands right after the Turbo


If your wideband does narrowband simulation you can wire it to give a narrowband instead of the front o2. It might throw a cel though

See this is Ideal for me. It a UEGO aem wideband. When i had my rx7 I had it installed about 12'' off the T-67 DP. I was just curious as to whether hooking it up in the secondary bung would cause inaccurate A/f ratio numbers such as leaner or richer readings. I know removing the secondary wil cause a cel for emmsions which wont bother the tune as it reads only harmful gases after the cat.

 

[ed1380]

See this is Ideal for me. It a UEGO aem wideband. When i had my rx7 I had it installed about 12'' off the T-67 DP. I was just curious as to whether hooking it up in the secondary bung would cause inaccurate A/f ratio numbers such as leaner or richer readings. I know removing the secondary wil cause a cel for emmsions which wont bother the tune as it reads only harmful gases after the cat.

I meant install sensor in o2 housing. Then you get cel for no o2 heater in front o2, until you use ecuflash to never get that cel

 

[miguelmcv]

Just weld it after the flex pipe and you won't have any problem with a cel, It would be the easiest thing, rather then trying to get that cel away.

 

[re-rx7]

I meant install sensor in o2 housing. Then you get cel for no o2 heater in front o2, until you use ecuflash to never get that cel

The car will not run right without the primary 02 sensor installed. Unless im not understanding you correctly. Are you saying take the front one out and install the wideband with no ill effect?

 

[knewblewkorvett]

The instructions that come with the AEM wideband specifically states: "mount the 02 sensor at least 18 inches downstream from the exhaust port"

BUT.....

"if you run a turbocharger then mount the sensor at least 36 inches or more downstream of the exhaust port as heat can cause the sensor to overheat"

Personally, I would not trust someone's opinion over those of the Manufacturer's instructions.

 

[2point3Tsi]

Got mine in stock dp just after the bend in the bottom, maybe 18" at best from turbo

No problems 3yrs and almost 30k miles later

 

[miguelmcv]

The instructions that come with the AEM wideband specifically states: "mount the 02 sensor at least 18 inches downstream from the exhaust port"

BUT.....

"if you run a turbocharger then mount the sensor at least 36 inches or more downstream of the exhaust port as heat can cause the sensor to overheat"

Personally, I would not trust someone's opinion over those of the Manufacturer's instructions.

The Manufacture will tell you what they know that will last longer and "accurate".
But that, doesn't mean that it will not work properly in a different area.

It all depend on what set up you are running and what fuel you are using.

If you use Just pump gas, It will last Longer, and about places where to mounted.

There are so many dsmers using the fron O2 sensor spot for the wideband, It is gives a faster respond (wideband).

If the OP says is STOCK, There shouldn't be any problem using the Front O2 location, Well, Talking about the Wideband efficiency.

To the OP.

Weld the WB after the flex, because if you use the O2 spot, It will throw a cel, Which you don't have an engine management to kill it.

 

[ed1380]

The car will not run right without the primary 02 sensor installed. Unless im not understanding you correctly. Are you saying take the front one out and install the wideband with no ill effect?

That's why I said to get a wideband gauge that does narrowband simulation. You use the gauge to see a wideband reading. Then you wire the narrowband signal wire into the ecu where the original o2 signal was. And if you wish to also log the wideband signal, then you wire the wideband wire into where there rear o2 signal was and use ecuflash to setup the ecu to receive the new signal.

Op plans on running ceddymod so he will have the ability to kill the cel and datalog.

 

[re-rx7]

That's why I said to get a wideband gauge that does narrowband simulation. You use the gauge to see a wideband reading. Then you wire the narrowband signal wire into the ecu where the original o2 signal was. And if you wish to also log the wideband signal, then you wire the wideband wire into where there rear o2 signal was and use ecuflash to setup the ecu to receive the new signal.

Op plans on running ceddymod so he will have the ability to kill the cel and datalog.

True that! On a sidenote this thread was not about how far it should be mounted. It was about if i could mount it in the stock dp i.e cut through that heatshield BS. Secondly it was how much the reading would change from the wideband being behind the cat in the secondary o2 spot.

Which after searching i still dont have a definitive answer on if there is a change. Also saying it would be slower to respond if installed back in the secondary o2 spot makes lil to no sense. Exhaust gas exits rather quickly not slowly maybe a tenth of a sec delay if that?

 

[miguelmcv]

Can I weld a bung into the Stock Dp for the Wideband 02? I still have the cat and would like to keep it for now. Im not going all out power crazy i just want a fun quick car with a safe tune. Also is it possible to mount it in the stock secondary o2 bung behind the cat? How much will the afr's be skewed due to its placement behind the cat?
The car is all original except for a catback and intake. The plan is to keep it that way or close to it. Any help is appreciated.

Here is your first post.

You were asking about how it performs at the back sensor location.

True that! On a sidenote this thread was not about how far it should be mounted. It was about if i could mount it in the stock dp i.e cut through that heatshield BS. Secondly it was how much the reading would change from the wideband being behind the cat in the secondary o2 spot.

Which after searching i still dont have a definitive answer on if there is a change. Also saying it would be slower to respond if installed back in the secondary o2 spot makes lil to no sense. Exhaust gas exits rather quickly not slowly maybe a tenth of a sec delay if that?

Mounting in the back, It will be slower, Not because there is differences in fuel mixture, But, It will give a tenth of a sec delay as you mention. Which it is a big difference, Not on the way we look it, But on the way the Injectors work,,,,,

Do you know how many times a injector gets trigger every minute?.....

Think about it, and see if a tenth of a second will affect or will help for the power gain.

Also, I forgot to ask.

Do you still have the Catalytic Converter?.

If you do, Then, That's a NO.

You will not get any good feedback after the Catalytic Converter.

 

[knewblewkorvett]

True that! On a sidenote this thread was not about how far it should be mounted. It was about if i could mount it in the stock dp i.e cut through that heatshield BS. QUOTE]

Can I weld a bung into the Stock Dp for the Wideband 02?

ummm

 

[re-rx7]

Its npt about how far in inches ect. It is however about if i can/could put it in the secondary or if the stock dp could be tapped for one.

Here is your first post.

You were asking about how it performs at the back sensor location.




Mounting in the back, It will be slower, Not because there is differences in fuel mixture, But, It will give a tenth of a sec delay as you mention. Which it is a big difference, Not on the way we look it, But on the way the Injectors work,,,,,

Do you know how many times a injector gets trigger every minute?.....

Think about it, and see if a tenth of a second will affect or will help for the power gain.

Also, I forgot to ask.

Do you still have the Catalytic Converter?.

If you do, Then, That's a NO.

You will not get any good feedback after the Catalytic Converter.

Thats the answer i need cause i still have the stock cat so i will need to weld into the stock dp a bung. So that takes care of the secondary o2 question. Quick question how hard is the original heat shield material on the dp to remove? While im at it....is it wrth doing a cat delete? Id like to keep the stock dp to curve boost creep and spike.

 

[ed1380]

why weld a new bung when you can install the wideband sensor where the old o2 was?

 

[re-rx7]

This is temp till i learn the software and become more familiar. Ive been watchin those youtube vids you were talkin bout and it has helped tremendously

 

[ed1380]

What wideband do you have?

 

[re-rx7]

Aem Uego

 

[knochgoon24]

I would suggest welding in a bung on the downpipe somewhere before the flexpipe. Between the 10 and 2 o'clock positions.

Placing it before the flexpipe ensures that any leaks that may form in it won't affect the wideband reading.

 

[ed1380]

Ah well it can't do narrowband. IMO sell it, add $20 and get a new mtx-l. Many more outputs and you can reprogram it.

 

[re-rx7]

Im getting the uego, turbo xs bc, blitz boost gauge, 255lph wally, safc neo, greddy TT, fp rewire kit, areomotive fpr,All for 300$ brand new from my bro. Parts he didnt get to use from his 3000gt vr4. Great brother!
Got to send the Neo into Apexi for the reflash. Heard about the problems gna use it to make last min changes if need be when i do not have a laptop with me.

 

[ed1380]

I would still recommend getting the mtx-l, especially since you can log. I have one and its the same o2 sensor as my Jetta, so I'm not worried about it being in the o2 housing.

I never thought about using a safc to fine tune, but I always have my laptop with me