On Feb 9, 2013, at 6:27 PM, Ed Anderson wrote:

> Great to hear about your move to the wide band O2 sensor, Tracy.
>
> I looked into modifying the EFISM to do the same, but found the PID control supposedly necessary to precisely control the heater element of the wide band sensor to be much more complex than simply extending the voltage range to interpret the WB output.  Did you embed any PID control elements in the EC3 for temperature control - or just accepted any small? error associated with temp variations?
>
> Ed

Ed, look at the LS1 line of Innovate sideband sensors.  They have their own computer that controls the heater, and it just puts out a 0-5V corresponding to the F/A mixture.