Any Of You Know If A Rb20 O2 Sensor Will Work On A Rb25det Series2 Engine?

[NateR31]

[paulr33]

I believe it may

[predator]

Not properly. It will plug in however.

[NateR31]

Not properly. It will plug in however.

define "properly"

[predator]

It doesn't give the correct voltage readings the ECU requires to do its closed loop operation. Therefore it's not economical. But it's not like the car won't run.. you can unplug totally it and drive around - it just will suck a lot of juice.

I tried one of these "EL - fits R33/R32" sensors into my old rb20det.. and plugged in the consult port and voltage was all over the shop. Since then a few are adament it's fine on an rb25.. but I haven't yet stuffed around checking how the ECU reads the voltage on the rb25 ecu yet.

[BH_SLO32]

I've run the RB20 sensor on my RB25 for a period with no noticeable side effects. The range of the sensor read by the RB20 and 25 ECUs is the same so I couldn't imagine there would be any real difference although I am not sure.

[NateR31]

reason i ask is that my o2 sensor died so i was eating alot of fuel, i tried the EL sensor thing, checked on the pfc controller and its working, but i dont know what volts and ect.. its ment to be on.

can someone see what volt at what rpm it should be?

[mad082]

$105 from autobarn for a direct fit o2 sensor. it is the proper one. it also fits sr20 pulsars and nx-r's. part number OX-203 otherwise for an extra $5 you can get a NGK one, but i don't have a part number for it, but it is listed in their pricelist (has R33 in there. thats how i know it is the same one as in a pulsar. same part number).