plx m-300

[Craving4Boost]

for people who have this unit or similiar..quick question....for the 02 sensor...what happens if i only use the widebands 02 and not the stock 02?

[skatanic28]

there should be a narrowband output for you to feed to the stock ecu. everything should work like stock then.

[Jookmasta]

[Craving4Boost]

i dont have an output...i have a black and red wire..(gound and power) and a grey and white wire...i think those are the wires im suppose to tap into the ECU so it will think the 02 bung is the stock one..but im not sure where to tap it

[Craving4Boost]

i meant sensor not "bung"

[rn240sx]

All u are doing is REMOVING the stock O2 sensor and placing that WIDEBAND sensor in its place..!!

Then I think its the white wire that you would feed back to the ecu to make it think the O2 is still there. This is the wire that has the narrowband signals for the ecu...

The gray wire i believe is the wideband output that u would hook up to the OPTIONAL 52mm pillar gauge that they sell...

I can be wrong about the 2 colors but thats what they are for..

I have the same unit, except for mine does not have the display on that black box, my display is an actual 52mm pillar mount gauge..

[skatanic28]

i dont have an output...i have a black and red wire..(gound and power) and a grey and white wire...i think those are the wires im suppose to tap into the ECU so it will think the 02 bung is the stock one..but im not sure where to tap it

one of those is probably the signal output, why dont you think you have one. check the instructions and see which one says narrowband output signal or something to that effect.

[Craving4Boost]

alright i got it....the gray wire is the narrowband output....but can someone tell me which pin is the 02 sensor input on a 91 240 ecu? because thats where i put it right?

[Import_Ant]

here

http://www.az240sx.org/tech/Pinout/

^complete list

[nissanfanatic]

Watch out! If the wideband sensor is too close to the engine, high EGTs will destroy the sensor. 24" from the engine is recommended. I would suggest just putting another bung in for the wideband and leaving the stock O2 sensor alone.

[Craving4Boost]

yea nissanfanatic...im just gonna go ahead and do that instead..its pretty simple