I was considering buying an UEGO Wideband for my car currently running Greddy E-Manage Blue with the Ulitimate Racing kit... I later plan on upgrading to AEM EMS but do I have to do anything differently on the install? Will this O2 sensor still give my OEM ecu the correct reading? What are your guys thoughts?

 

Can anyone provide a base map for F20C2 engine ?! it's EDM 2004, but still it's F20C. If anyone has an AEM V2 Intake installed with testpipe, that's even better smile.gif I'll tune it after that but I need a base map to start with...


I started my AEM EMS V2, I used the base map that comes with the AEMTuner software. It should be a stock AP2 2.2 map, but strange that the RPM limiter is 9000 RPM ?!! Anyway, I started the car, I noticed that CEL did not light at all. Maybe CEL is not applicable on AEM, so any failure should be noted by logs only... it's ok, the problem that I faced is that it didn't idle, I waited like 3 minutes, the RPM idle was bouncing 1000-2000-4000 even 5000 then back to 2000 then 5000, it was very weird I thought it's calibrating, but it didn't.. until the temp bar reached the middle of the meter, usually it's 2 bars below the middle, so I turned the car off, and I smelled the fuel as if the car is very rich, also I have a UEGO but didn't connect it yet, it was showing 11-12,, which is very rich at idles at 1500-2000 RPM....

the only thing I did is calibrating the TPS...
that's it...

 

Trying to install an AEM inline UEGO at the moment and the wiring diagram shows the brown analogue negative wired to the EMS (connector C18) but then it goes on to say that it can be wired to power ground if sensor ground is not available (certainly easier).

The above seems to read that I shouldn’t wire it at all. Can anyone one point me in the right direction here, I am confused.

Is my install slightly different form the DIY because I am not using the gauge?

Lastly, when you pop up the white retainer on the factory harness is there any risk of the other wires unintentionally coming out of there place. I am having nightmares of wires popping out all over the place leaving me with a mess.


Cheers

 

No risk at all. In fact you need a pin removal tool to release the pins. I am sure fir the same reason as your fear

 

Thats a relief!

Any ideas on the sensor ground (brown) wire. I will connect it to C18 as per the instructions I have to start with, and see what data I get. I figure that this might be a newer sensor than the DIY was written for since it is self calibrating.

 

When it comes to sensors, ECUs and dataloggers (the AEM EMS is both) there is a referance 5v+, a ground and a signal lead. A wideband has a heater circuit as well. It is best if the ground for these sensors are controlled by the device and not body group. You could keep up witha floating ground that may differ from the control ground from the device. So itnis best to ground to C18.

For my install, I cut the connector from an old stock O2 sensor and wired it to that connector. Easier then opening and depinning the ECU connector.

 

Nice topic!

 

Agreed, Ill be doing the same soon