Under $2500 Turbo Kit w/Intercooler coming soon! - Toyota Yaris Forums

cdydjded · 08-15-2007, 03:31 PM

About the CEL, I would like to know with the 2 guys that have the ZPI kit why they removed the O2 sensor? Also if they tried to use a O2 simulator.

joey1320 · 08-15-2007, 11:39 PM

Quote:

Originally Posted by cdydjded

About the CEL, I would like to know with the 2 guys that have the ZPI kit why they removed the O2 sensor? Also if they tried to use a O2 simulator.

well one was spkrman but he is no longer a member and the other is turboyaris, but he doesn't come by here much often anymore. i talked with him before about this same issue and he told me that zpi just removed the front o2 sensor and tuned the car as best possible with the emanage.

Nabisco · 08-16-2007, 09:49 AM

Wide band data logers such as the Zeitronix kit has a simulated narrow band output for the ECU. This is only good when the unit is being used to data log. However I recall on some other Toyota forums there is a circuit you can build that will put a load on the o2 circuit so the ECU doesn't throw a code.

Another option: A resistor that makes the ECU think that there is an o2 sensor there, without ever varying values, so the fuel system will not ever account for unburned fuel hydrocarbons, the car may not enter closed loop mode, your fuel economy will suffer, and your catalytic converter will eventually die a premature death, possibly by slagging down and burning.

I think neither are sufficient. We need a donor ECU!

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08-15-2007, 03:31 PM	#1
cdydjded Drives: Yaris LB Turbo Join Date: Aug 2006 Location: Miami FL Posts: 782	About the CEL, I would like to know with the 2 guys that have the ZPI kit why they removed the O2 sensor? Also if they tried to use a O2 simulator.

08-16-2007, 09:49 AM	#3
Nabisco View User's Garage Drives: '08 Honda Fit Sport Join Date: Aug 2007 Location: Tampa Posts: 45	Wide band data logers such as the Zeitronix kit has a simulated narrow band output for the ECU. This is only good when the unit is being used to data log. However I recall on some other Toyota forums there is a circuit you can build that will put a load on the o2 circuit so the ECU doesn't throw a code. Another option: A resistor that makes the ECU think that there is an o2 sensor there, without ever varying values, so the fuel system will not ever account for unburned fuel hydrocarbons, the car may not enter closed loop mode, your fuel economy will suffer, and your catalytic converter will eventually die a premature death, possibly by slagging down and burning. I think neither are sufficient. We need a donor ECU!