Confused: RT SR20det - o2 sensor has been unplugged - NO CEL?!?!?!

[TurbLu]

So guys I've been driving around for quite some time now and my o2 sensor was completely disconnected. Im confused, shouldnt this have thrown atleast a CEL? Maybe this is why I was running lean a few weeks back. But still, does a #62 ECU not throw a CEL when the o2 sensor is unplugged???
Also the car feels fine and accelerated normally. Is that normal?

[ManoNegra]

hmm... did you pull the codes? maybe you bulb is out.

[TurbLu]

Nah the bulb comes on when needed too. I will pull codes to see if it did throw a code only to the ECU.

[lazierhobo]

95% of the time your car runs closed loop, and doesnt take reading from the O2 thats why you had normal performance without one

[TurbLu]

LOL... when does it run open loop?