dyno question

[99 gst spyder]

I've taken the stock o2 sensor out and install a aem uego o2 sensor in the stock location but the sensor is not working. Is it okay to dyno/tune the car without the stock o2 and with a non working aem uego sensor in the stock location? I was wondering if I'd get away with any problems. I'd hate to take the manifold and o2 housing off.

Thanks.

 

[Agent Ezzard]

What are you using to tune with? The AEM doesn't have a narrowband output so you'll need to either weld another bung for the wideband and reinstall the stock sensor, get a wideband product that has narrowband simulation output, or if using a tuning solution like DSMlink (I'm old school), enable narrowband simulation so it makes the ECU believe there's a stock sensor there.

 

[snowborder714]

Have you enabled narrowband sim in ECMlink? If not, you'll need to do that. You'll also need to work on the input and getting it to read the same as your gauge (search around on how to do that).

To me it seems pointless to go to a dyno session with no narrowband (car will run like crap) and no wideband (no idea what your actual AFR's are).

 

[daren_p]

What are you trying to tune? Without the stock or a working WB with NB simulation you have no closed loop feedback. So you have no way of tuning for closed loop operation.

If your just trying to tune open loop & the dyno provides a WB, guess it will work but doesn't seem ideal (& is pointless if the car isn't already dialed in under closed loop conditions)

 

[99 gst spyder]

What are you using to tune with? The AEM doesn't have a narrowband output so you'll need to either weld another bung for the wideband and reinstall the stock sensor, get a wideband product that has narrowband simulation output, or if using a tuning solution like DSMlink (I'm old school), enable narrowband simulation so it makes the ECU believe there's a stock sensor there.

I'm using ecmlink v3. I have not yet to enable the narrowband simulation.

Have you enabled narrowband sim in ECMlink? If not, you'll need to do that. You'll also need to work on the input and getting it to read the same as your gauge (search around on how to do that).

To me it seems pointless to go to a dyno session with no narrowband (car will run like crap) and no wideband (no idea what your actual AFR's are).

Well the aem gauge doesn't even work. The uego o2 sensor is shot.

 

[snowborder714]

I wouldn't drive the car if the sensor is shot.

I'd take that time to reinstall the stock narrowband to allow the car to run properly and then order an LC-1 as they play much nicer with link than the AEM units do.

 

[99 gst spyder]

What are you trying to tune? Without the stock or a working WB with NB simulation you have no closed loop feedback. So you have no way of tuning for closed loop operation.

If your just trying to tune open loop & the dyno provides a WB, guess it will work but doesn't seem ideal (& is pointless if the car isn't already dialed in under closed loop conditions)

Yes, the dyno shop has their own wideband that they have and said it'll be better then the uego. They also said they can tune it in open which it doesn't need the front o2 but will just take a little longer for them to work around with the part throttle/closed loop since the front o2 is not working.

I wouldn't drive the car if the sensor is shot.

I'd take that time to reinstall the stock narrowband to allow the car to run properly and then order an LC-1 as they play much nicer with link than the AEM units do.

Yeah, if it does get too fustrated, I am going to have to reintall the stock narrowband. Just wondering if I can get by it.

The aem wideband doesn't have to play with link if the sensor is weld bung on a different location only if you want to read it in link right? I got this aem wideband free from another car and the sensor just seems to be shot.

 

[AK Maniak]

Why not just wait to tune it till your car is in proper working condition?

 

[DeadlyScone]

You need to cut the front O2 sensor wire going into the ecu. Look for the ecu pin out on the ecmtuning website. Once you do that you have to put the 0-5v wire from the WB on to that. once you do that get on dsmlink and configure it. simulate.

http://www.dsmlink.com/images/forums/1GECUPinout.pdf

 

[snowborder714]

The aem wideband doesn't have to play with link if the sensor is weld bung on a different location only if you want to read it in link right? I got this aem wideband free from another car and the sensor just seems to be shot.

Your car won't run right how it's currently setup - period. You have no o2 sensor that's working in the car, which it needs. I wouldn't go to the dyno until you have either a working narrowband in with the wideband in a different bung (and basic idle/cruise tuned) or the wideband in with narrowband sim enabled (and basic idle/cruise tuned).

It still doesn't play well whether it's used for narrowband sim or just straight wideband logging. The display in link takes some work to get matched up to the gauge display. Yes, it's possible, but takes some trial and error to get all the settings right.

You need to cut the front O2 wire going into the ecu. Look for the ecu pin out on the ecmtuning website. Once you do that you have to put the 0-5v wire from the WB on to that. once you do that get on dsmlink and configure it. simulate.

He said the sensor is shot as the gauge isn't even displaying properly. No need to worry about the ECU input at this point.

 

[99 gst spyder]

I'm not that familiar with the tuning process but I guess I'll just have to put the stock o2 back on the car then go to the shop.

The dyno shop does use their own wideband on the dyno, can I still go without a wideband or should I still try to get the uego up and running.

The uego is stuck at 14.8 and doesn't move.

 

[snowborder714]

Your best bet if you can't get it working is just use the shop's wideband. Ideally you'd want your own so you can log the wideband value in your pulls, but it's not a deal breaker if you can't. Just know you'll want to get it in there eventually

 

[99 gst spyder]

Great. Thanks.

 

[gofer]

From breezing through this thread quick it looks like you're removing your AEM UEGO WB sensor because it's not working and replacing it with the stock front o2 sensor?

My question is, if you've already got to remove the bad WB o2 sensor and re-install the stock one, why don't you just replace it with a WORKING AEM UEGO WB o2 sensor?

You can buy them at Auto Zone...

Bosch/Oxygen Sensor P/N - 17014

 

[snowborder714]

I assumed that was the obvious solution, but didn't know how quickly the OP needed the car working.

Plus, if he doesn't want to or plan on doing narrowband sim and doesn't currently have it setup, then that wouldn't be ideal.

 

[99 gst spyder]

From breezing through this thread quick it looks like you're removing your AEM UEGO WB sensor because it's not working and replacing it with the stock front o2 sensor?

My question is, if you've already got to remove the bad WB o2 sensor and re-install the stock one, why don't you just replace it with a WORKING AEM UEGO WB o2 sensor?

You can buy them at Auto Zone...

Bosch/Oxygen Sensor P/N - 17014

Really! I didn't know autozone carry them. Will the autozone o2 sensor harness fit right into the uego harness and will it work right? The whole time I just thought autozone only carries oem. Wow, thanks buddy. Ill go see if they have any and if itll fit into the uego. Thanks a bunch......

I'd probably gonna put the stock o2 back in and weld bung a new location for the wideband which I think will be the best solution.

Can I just drill and weld the bung without taking the down pipe off or should I just take it off before weld?

 

[gofer]

If you walk into AZ and ask for a AEM UEGO WB o2 sensor they'll look at you like you're crazy, that Bosch 17014 sensor is OEM on certain Audi's and VW's.

If you had a 2g I would say to weld up a dedicated WB o2 sensor bung and just use the rear o2 sensor input, however, on a 1g you'll probably end up using the front o2 sensor input anyway since the 1g's don't have a lot of inputs.

BTW. Not just AZ carries that o2 sensor, you can call around to any auto parts store and ask for a Bosch 17014 o2 sensor.

 

[jrohner]

^ If it's the sensor that is shot and not the controller.

 

[99 gst spyder]

Cool. Thanks a lot. Will look into it more.