Originally Posted by Alonso 
What about V1 rt users? Is there a way to display afr even tho I don't have the extra analog input?
Its a s13 ka24de rt v1 ecu and currently use an innovate lm-1.
I don't have tunercode but I'm interested...
Yes! Using a simple 2 resistor voltage divider, the 0-5V analog output from a wide band O2 sensor can be fed into the stock narrow band O2 sensor input on the ECU. I have written code to convert this linear voltage into the narrow band voltage (Nernst conversion) expected by the closed loop fuel control code. Using TunerProRT, the shape of the Nernst conversion curve can be modified to control the response rate, and the center point can be set to tune the closed loop AFR. The O2 voltage is included in the TunerCode data stream for logging and can be converted to AFR in TunerProRT. When testing is complete, I'm planning to offer this, along with some other neat features, as TunerCode options which can be ordered individually.
Cheers,
Dave
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One of the things we talked in depth about a couple weeks ago 
You know what I'm interested in, an OBD RTV2 ECU period...
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