Aem o2

bcjjones · Apr 4, 2012

Keep hearing of ppl installing the wideband o2 in the stock o2 position although the instructions say at least 32 inches from turbo. Havent found a definite answer so is this a smart move and has anyone had problems doing this?

DSMer541 · Apr 4, 2012

iv been running mine in the stock location for a couple years now with no propblems.

U8NTRDY · Apr 4, 2012

There is a big majority of DSMers including myself running the wideband in the o2 housing. Just make sure you have the propper engine management such as ECMLink and enable narrowband simulation. The ECU still must see a narrow band signal but you can replace the stock O2 with a wideband and run without issues. I've been running this way for about a year and a half now with no issues and no fowled sensors due to the additional heat.

Seamus · Apr 4, 2012

it shortens the sensor life running it that close to the turbo. Also, oyu can get error codes if it is too hot. innovate claims that exposing the sensor to over 900*C temps willcause premature failure. I've had sensors in the stock location and well downstream on different cars. I've never had to replace a sensor because it went bad. I have just replaced them because I felt like it was time to. I've had sensors go over 20k miles in the stock location before Ipulled them out on rotary engined cars with temperatures above 900*c at the o2 location. Like Isaid, ipulled them becuase I felt it was time, not because they went bad.

bcjjones · Apr 4, 2012

Okay, but without the proper tuning device to simulate a narrowband its smarter to just have a bung welded in? Which is the only thing i was confused on how the ecu got the narrowband signal. I dont have Link so i wasn't aware that was ppssible. I only have safc 2 for now which isnt able to simulate a narrowband. Without ecmlink or equivalent i guess im just going to weld a bung on the downpipe before the flex!

Seamus · Apr 4, 2012

You don't need link. the wideband controller itself simulates the narrowband for the ECU. innovate,zeitronix,and other products do it. I would assume AEM does the same.

asrdave · Apr 4, 2012

Seamus said:
You don't need link. the wideband controller itself simulates the narrowband for the ECU. innovate,zeitronix,and other products do it. I would assume AEM does the same.

yes it does too, all you need to do is turn the dial to the propper setting

bcjjones · Apr 4, 2012

On my AEM uego digital wideband there is no dial? Only a gauge and no way to adjust anything or any settings?

AEM Power 30-4100 - AEM Power Digital Wideband Air/Fuel UEGO Gauge Kits - SummitRacingEquipment.com

Thats the one.

Seamus · Apr 4, 2012

bcjjones said:
On my AEM uego digital wideband there is no dial? Only a gauge and no way to adjust anything or any settings?

AEM Power 30-4100 - AEM Power Digital Wideband Air/Fuel UEGO Gauge Kits - SummitRacingEquipment.com

Thats the one.

There should just be a wire that you need to wire to the ecu's 02 input. AEM may make you enable narrowband simulation or somehting in their software.Like I said, I only use innovate and zeitronix. Hopefully someone who uses the AEM will chime in for you. my advise would be to sell that thing and buy an innovate LC1. You need to log your afr's to do anyhting with them anyways. wideband gauges are for RICERS!

bcjjones · Apr 4, 2012

Well from what i understand, and now that you mentioned that, there is a blue and white wire that were optional in the instructions. One of which, if i remember correctly was for logging the afrs and maybe the other was for the narrowband option. Ill have to find those instructions online if no one else has an idea?

Seamus · Apr 4, 2012

bcjjones said:
Well from what i understand, and now that you mentioned that, there is a blue and white wire that were optional in the instructions. One of which, if i remember correctly was for logging the afrs and maybe the other was for the narrowband option. Ill have to find those instructions online if no one else has an idea?

Well the logging wire isn't optional if you want to use your wideband for anyhting other than making blinky lights on your dash. Wire the datalogging output to your EGR temp. If i remember correctly, pin 4 is your o2 sensor and 15 is your egr temp.

bcjjones · Apr 4, 2012

So im assuming just splice it in the egr temp and o2 wire? As opposed to bypassing the ecu.

And yes you are correct on the pinout locations

Seamus · Apr 4, 2012

bcjjones said:
So im assuming just splice it in the egr temp and o2 wire? As opposed to bypassing the ecu.

And yes you are correct on the pinout locations

Don't splice it, the narrowband wire IS your o2 signal now. you cut or remove the wire and tape off the old one and wire the AEM to the pin. Same for the egr temp.

bcjjones · Apr 4, 2012

Got it. That makea a little more sense. Thank you for the help man

Now im a littke confused. Hooked everything up like you said but when logging m o2 reading is out of the normal .01-.9 voltage reading. The reading is much higher. Which makes sense because there is only the wideband o2 hooked up but im wondering if this is an okay signal to send the ecu? I mean its no longer getting a narrowband reading its now only receiving the wideband?

MY1GDSM · Apr 5, 2012

Seamus said:
it shortens the sensor life running it that close to the turbo. Also, oyu can get error codes if it is too hot. innovate claims that exposing the sensor to over 900*C temps willcause premature failure. I've had sensors in the stock location and well downstream on different cars. I've never had to replace a sensor because it went bad. I have just replaced them because I felt like it was time to. I've had sensors go over 20k miles in the stock location before Ipulled them out on rotary engined cars with temperatures above 900*c at the o2 location. Like Isaid, ipulled them becuase I felt it was time, not because they went bad.

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