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View Full Version : Can the AEM WBO2 kit replace the lamba o2 sensor?

osso
19-07-05, 11:41
I have just bought a AEM WBO2 kit from a boneyard :D :respekt: and I was wondering whether it is possible to swap out the lamba o2 sensor and simply replace it with the Wideband sensor.. I am getting mixed reports on this forum and i am now wondering whether the stock ECU is compatable with with the voltages from the wideband sensor?! or will i need a emanage system or AEM ECU controller as well?

I'd rather get rid of the lamba o2 sensor and replace it, rather than have them both fitted on the exhaust...

Also where do you guys normally fit the AEM gauge? im thinking it will probably be a good idea to replace the clock with the AEM gauge.. other suggestions welcome! :D

cheers
James
Jake
19-07-05, 12:14
No, the ECU wouldn't understand the signal from the WB. You'll need to retain the stock sensor.
Jake
19-07-05, 12:19
Ah, here's (http://www.mkivsupra.net/vbb/showthread.php?p=495511) a more complete answer from someone who actually knows what they're on about.

(I taught him everything he knows, honest) :p
JohnA
19-07-05, 13:25
If your AEM controller has 0-1V Narrowband simulation then I don't see why you couldn't connect the ECU to that signal (not all AEM controllers have this option, mine does)

It won't be a direct swap for the hardware obviously since you need to weld a bung for the WB. You could blank off the stock thread perhaps and just keep the WB.

On other cars with less 'unique' oxygen sensors it can be a straight swap, yes.
Alex
19-07-05, 13:52
Surely if you use the AEM in narrowband emulation mode then it can't be a Wideband and therefore it's an extremely expensive waste of time?

Stock 02 + seperate WB02 surely is the only setup you *need*. I've seen my car hunt for stoich via the WB02's display but with the ECU using the sotck 02 and it does a fine job.
bromy
19-07-05, 15:36
Also where do you guys normally fit the AEM gauge? im thinking it will probably be a good idea to replace the clock with the AEM gauge.. other suggestions welcome! :D

cheers
James

James, you will need to make some type of ring for the facelift model if you plan to use the clock aperture also i did not like how far the gauge was protruding out of the dash so i sunk it right in.

nick
osso
19-07-05, 15:43
now that i like! who made the rings for you? my dad is a tool maker and could probably make one up for me if i had a spec to give him, bit difficult tho when i live 300 miles away from my parents!

James, you will need to make some type of ring for the facelift model if you plan to use the clock aperture also i did not like how far the gauge was protruding out of the dash so i sunk it right in.

nick
bromy
19-07-05, 15:48
now that i like! who made the rings for you? my dad is a tool maker and could probably make one up for me if i had a spec to give him, bit difficult tho when i live 300 miles away from my parents!

Made them myself, if you take the centre panel out and give it to your dad he will see what is needed you will also need to make a new bracket for the rear ( the u shaped one that comes with the kit )
bromy
19-07-05, 15:51
Sorry just seen the 300 mile bit, if your not in a rush i will get you some dimensions at weekend
Ian C
19-07-05, 16:34
Surely if you use the AEM in narrowband emulation mode then it can't be a Wideband and therefore it's an extremely expensive waste of time?

Stock 02 + seperate WB02 surely is the only setup you *need*. I've seen my car hunt for stoich via the WB02's display but with the ECU using the sotck 02 and it does a fine job.

Oh deary me :) The AEM unit has two outputs, my dear chap, one of which is the 5v wideband and one of which is the 1v narrowband emulation :)

:rtfm:

However, I agree with leaving the stock sensor well alone and having the wideband in addition. If anyone can name me a good reason for replacing/removing the stocker that I haven't already covered in the thread Jake linked to, I'll be happy to attempt to shoot it down in flames discuss it.

-Ian
JohnA
19-07-05, 16:41
The NB simulation of the WB has quicker responses, compared to a tired (but functional) narrowband.

I have done this straight swap before and the ECU (Motronic) was extremely happy.

I know that some ECUs do not like the 02 sensor signal to be nippier though, because they have built-in 'padding' in their code. Haven't got a clue how mr "T" will react to the signal from the AEM, but I'll find out later on when I feed the ECU with the NB simulation.
I'll wait until the replacement NB arrives though, so I'll be comparing like with like.