my o2 is gone

[300hp240sx]

like it says i do not have an o2 sensor in my car (sr20det). i will be running it, and i was wanting to know if there is a real major problem that might happen.

basically do i need it, or can i run without one.

if i need one does anyone have one 4 sale?

[ledzeppelin240]

The O2 sensor is part of your engine management. It tells the ECM to make the fuel mixture rich or lean depending on its reading when in closed loop operation. The engine will most likely run way rich without it which washed the cylinder walls resulting in no lubrication...You make the choice.

[NIK90s13]

The O2 sensor is part of your engine management. It tells the ECM to make the fuel mixture rich or lean depending on its reading when in closed loop operation. The engine will most likely run way rich without it which washed the cylinder walls resulting in no lubrication...You make the choice.


Agreed, it will run way rich, and BACKFIRE BIG TIME!!!! You need it!

[300hp240sx]

yeah i noticed some backfiring but didnt know what was the cause of it.

also would it cause a boost leak bc i cant find mine....and someone told me that it might cause the leak?

[SR20d2fourT]

No boost leaks are caused by that. Get an o2!

[NIK90s13]

The o2 sencer is after the turbo, if anything you will get an exaust leak.
You do need it. your gas milage is suffering, your sylenders are being washed, loosing seal, and compression, by it running rich.