Im using a PR3 ecu which requires two 02 sensors. One sensor is located on the 1-2 primaries and the other is on the 3-4 primaries. Im using a DC 4-1 headerso do I just get one 02 bung welded on the 1st primary and one on the 3rd primary? Thanks.

 

never played around with one but Im interested to know what type of signal these o2 sensors are giving the ECU and if there is any variation.
If they are the same type of O2 sensor I dont see why it wouldnt be feasible to just use one and splice the second line into it...well so long as it doesnt degrade the voltage too much.

 

hmmm...Im not sure if they send the same signals but Ive heard mixed results using just one 02 sensor. Some people have problems while others dont. I do know that if I eliminate the second 02 sensor itll run really rich.

I just want to do it right the first time and not have to mess with it too much later on (reason for N/A).

Thanks.