Hi im replacing my factory O2 sensor with the AEM EUGO O2 so i figured I would just unplug the factory O2, and run the 0-5v wire to the number 16 (white wire on the 32 pin clip) I am getting a check engine code though....Should I leave the factory O2 plugged into the harness? I'm thinking becuase there is no load on the heater wires that it is throwing the code. What should I do?

Thanks in Advance

 

Put the primary O2 back on. Put the wide band in your aftermarkst header's aux bung. If you don't have an aftermarket header, then you'll need to put the widenand in place of the secondary O2 in the cat. It will probably throw a code but the car should run ok...which it won't if you pull the primary O2.

 

Its not an aftermarket header its on a Turbo Downpipe and it only has the oem location for O2 sensor at the moment.

 

You have a turbo on the oem ecu?? Greddy?

You'll have to put the wideband in place of the secondary O2 at the cat. Or if you have a test pipe, you might have a muffler shop weld in a second bung for the wideband.