Aem O2 location?

[GsSkeeT]

I've searched the forums, maybe I'm not looking in the right spot, I mostly see answers for 1g cars and the older Bosch unit. Right now I'm running a 16g and according to the serial number on it, it came from a gvr4. So I'm uncertain if it's a big or small. It's a 6bolt engine in a 98 car with a 95 eprom ecu. Also has a punishment racing fmic. Stock fuel pump, stock injectors and stock fpr. Factory boost solenoid hooked up runs 7-8lbs. I just got the aem wideband uego with the new Bosch 4.9LSU. I plan on upgrading to bigger injectors, pump,fpr and dsmlink eventually but for now am using the 95 ecu and stock fuel system. What is the best location to mount the sensor for my current set up that if needed, or not, could be reconfigured for the dsmlink setup later on.
Thanks in advance for your input.

 

[97 eclenger]

Its highly debatable on where to mount it at. for aem, its not fast as the innovative wide band, but for aem you'll either need to turn the front o2 off or keep the o2 hooked up and have a bung welded in. as for the location, its ok to put it in he front. its not as accurate in the rear o2 location. people will say its too hot in the front location, but there has never been an issue with the wide band in the front.

 

[GsSkeeT]

Its highly debatable on where to mount it at. for aem, its not fast as the innovative wide band, but for aem you'll either need to turn the front o2 off or keep the o2 hooked up and have a bung welded in. as for the location, its ok to put it in he front. its not as accurate in the rear o2 location. people will say its too hot in the front location, but there has never been an issue with the wide band in the front.

From what I've read, you'd have to run it as a narrow band in the front which seems like it would be of no use as a wide band, or maybe I'm not understanding. I'm still using 95 ecu so I don't know how I'd turn off the front o2 to run it either. I'd prefer to run it as wide band, hopefully get accurate readings and such.

 

[Pipnorcali]

When running the narrow band sim your gauge and logging read as a wideband

Read this

https://www.ecmtuning.com/wiki/v3narrowbandsim

 

[GsSkeeT]

When running the narrow band sim your gauge and logging read as a wideband

Read this

https://www.ecmtuning.com/wiki/v3narrowbandsim

I have a stock 95 ecu in the car. Not ecmlink. I Plan on upgrading eventually, but I want to hook up the wideband now. That part of my question seems to be getting overlooked. What you're telling me is helpful, but not for my current set up.

If I were to use front location with my current ecu, wouldn't I have to connect a wire to the ecu?

 

[2gmitsueclipse]

Mounting in the front o2 location is common practice. This is why many wideband kits now offer narrow band simulation. DSM LINK also has a narrow band simulation feature as well. The ecu is only using the o2 sensor during closed loop operation. I rather like to see that the ecu is cycling to achieve a 14.7 afr. The benefit of having the wideband in the o2 housing location is the reaction time and there is fewer chances of an exhaust leak. Downstream has more chances of a leak to throw off the sensor. People that choose to keep the upstream stock o2 sensor have the benefit of having another source to ensure the wideband is functioning correctly. The best way if one is worried about all the emissions nonsense is to weld an additional bung to install the wideband.

The o2 sensor is used during closed loop operation. This is why narrow band simulation used. Man wideband kits as well as DSMLink support this feature so it can operate as a narrowband or stock sensor does. The narrowband uses a 0-1v source while a wideband in our case uses a 0-5v source. Narrowband simulation convert the 0-5v signal to a 0-1v signal needed by the ecu. I will agree that using an additional bung for the wideband is the "suggested" method, which I have already mentioned. I have chosen the o2 location for ease of installation, less wiring, and having more space to tap in external sensors to be logged. While understand that some will say that o2 sensor life is shortened to a degree, I do not mind replacing it as needed.

Yes, using narrowband simulation will require you to splice in a wire going to the ECU so it can read the o2 signal from the wideband.

 

[Pipnorcali]

What we're saying is go buy dsmlink I guess then

 

[GsSkeeT]

Mounting in the front o2 location is common practice. This is why many wideband kits now offer narrow band simulation. DSM LINK also has a narrow band simulation feature as well. The ecu is only using the o2 sensor during closed loop operation. I rather like to see that the ecu is cycling to achieve a 14.7 afr. The benefit of having the wideband in the o2 housing location is the reaction time and there is fewer chances of an exhaust leak. Downstream has more chances of a leak to throw off the sensor. People that choose to keep the upstream stock o2 sensor have the benefit of having another source to ensure the wideband is functioning correctly. The best way if one is worried about all the emissions nonsense is to weld an additional bung to install the wideband.

The o2 sensor is used during closed loop operation. This is why narrow band simulation used. Man wideband kits as well as DSMLink support this feature so it can operate as a narrowband or stock sensor does. The narrowband uses a 0-1v source while a wideband in our case uses a 0-5v source. Narrowband simulation convert the 0-5v signal to a 0-1v signal needed by the ecu. I will agree that using an additional bung for the wideband is the "suggested" method, which I have already mentioned. I have chosen the o2 location for ease of installation, less wiring, and having more space to tap in external sensors to be logged. While understand that some will say that o2 sensor life is shortened to a degree, I do not mind replacing it as needed.

Yes, using narrowband simulation will require you to splice in a wire going to the ECU so it can read the o2 signal from the wideband.

I don't have a problem putting it in the front o2. Guess now I need to figure out which wire to tap into the ecu. I don't have emissions here so that's not a concern, and I'd rather hook it up front so it's more accurate, I agree I'd rather have to replace the sensor more often than having inaccurate readings by mounting it that far back to keep the sensor "safe".

So mounting it up front- I'd use the P2 setting? Small volt range ? You wouldn't happen to know which wire in the ecu to hook it to would you? Keep in mind my confusion on some things- it's a 98 car with 6 bolt swap and 95 ecu. Then would I just tie off the original O2 wire? The instructions for the wideband only show how to hook it up to either work by itself or hook up to aem ems.

 

[GsSkeeT]

What we're saying is go buy dsmlink I guess then

I know, I know. I want to but I have spent a lot of money fixing other problems the previous owner made like replacing the intercooler and piping due to it was a complete hack job and leaked at every coupling. I've replaced the whole front suspension, replaced all the timing components, brakes, rotors. Trying to do all the maintenance first, then the fun stuff. Dsmlink is definitely on my priority list, but for now, with it being my dd I want to be able to monitor it somehow.

 

[2gmitsueclipse]

Does your wideband support narrow band simulation? If yes, DSMLink is not needed to support that function. You tap into your front O2 signal on the harness going into the ecu.

If no, then you will need a tuning solution that will provide the support to use narrow band simulation.

I have not said DSMLink is necessary if your wideband already has the narrow band feature.

 

[2gmitsueclipse]

Sounds like you should just have an additional bung welded in for your wideband and be done with it.

 

[GsSkeeT]

Does your wideband support narrow band simulation? If yes, DSMLink is not needed to support that function. You tap into your front O2 signal on the harness going into the ecu.

If no, then you will need a tuning solution that will provide the support to use narrow band simulation.

I have not said DSMLink is necessary if your wideband already has the narrow band feature.

I apologize if it sounded like I'm implying you said I must have dsmlink for it. Not my intention. I was merely trying to figure out if I really needed to weld in the extra bung or just use the front O2 since I'm still running stock ecu but plan to upgrade later. So you've answered my question on that, thank you. My next questions:
1) since I'll be removing the stock O2, what should I do with the connector that goes to it that won't be used anymore? Just tie it back out of the way in case it needed to be reconnected later?
2) these are the calibration settings for the aem wideband I just purchased-
P0- aem gauge default afr
P1- aem gauge default lambda
P2- afr small volt range 1-2v
P3- emulates autronic wideband O2 sensor calibration 0-1v
P4- emulates a non linear Nernst Cell calibration 0-1v
I'm by far no expert, but I do want to properly take care of my car. Which is why I'm asking all this. Of the settings listed above, does one of them simulate narrow band?
Thanks

 

[2gmitsueclipse]

I believe you will want to use P4 for narrowband simulation. Tap into pin 76 on ecu harness for the front o2 location.
When removing the OE front o2, you just tape up the connector on the harness. It is under the thermostat housing.