I was quoted $900 by ECU Doctors in FL, if you know of somebody who would fix for less, why don't you post it so others can benefit? The Innovate unit relies on a wideband O2 sensor and provides two outputs: a wideband signal (which I connected to a wideband gauge for a much more accurate AFR read than a narrowband would provide), and a programmable emulated narrowband signal (which I connected to the stock narrowband Motronic ECU). What do you think would happen if the wide band signal was used as input by the ECU?

 

That would not work well, because the ECU is not designed for a continuously varying "analog" input, it is looking for something that toggles between two states, like a switch. At the risk of oversimplifying, the ECU adjusts the amount of fuel that is injected in order to maintain a 50% duty cycle from the sensor.

I'm curious... Are you logging the wideband sensor data, or using it in real-time just to monitor the AFR? The former would be useful for having a custom map made by someone like Wong or Wiener; but, what it the purpose of monitoring the AFR in real-time?

 

There're other sources for automotive electronics, i.e. do a Google search;




Ivan provided (up-thread) an explanation to your question about using a wide O2 as an input to a narrow band ECU design, as I did in post #15.

 

I'll do it...

THESE guys do Bosch control unit repair for every shop on the west coast and probably the vast majority of North America.