adding an o2 sensor if there is not one there from the factory?
 

Hi guys think i asked this before but never got anywhere. I have a d16a9 engine from europe and am a bit confused as it has no o2 sensor (yes ive checked all along the manifold/exhaust and spoke to other owners) what I am wanting to do is add an o2 sensor in the exhaust and link it to a A/F gauge for tuning as the car is turboed. Has anyone had a simular problem? Does the o2 sensor have to be run to the ECU to obtain a 0-1.0 volt signal or something? or can i build a standalone circuit using A/F gauge, o2 sensor and switched power from the battery? any help would be great....
thanks in advance

Re:adding an o2 sensor if there is not one there from the factory?
 

I know this wont be acurate at all but if it can be done and it kind of works i would be greatful for the extra flashing lights in my cockpit ;)