It can be changed--but what is changed is the ratio to calibrate the speedometer for different rear axle gearing or tire sizes. It is not for switching between metric and imperial measurements. That's controlled by your CCM and the dash switches.
I have attached an updated version of your BIN to this post. In this version, I have disabled the ERR43 code but left your knock feedback intact; this assumes your error is coming from the resistor in the knock sensor and is not actually a knock sensor failure. I have disabled the EGR codes and have set the minimum speed for the EGR diagnostic to 255, which it will never hit so the EGR will never try to actuate. I have also disabled the diagnostic code for the oil life lamp.
You can do all of these things yourself, very very easily. Get the free program "TunerPro" and install it. Get the XDF definition file steveo linked you earlier in this thread, also free. Run TunerPro. Click XDF->Select XDF and open the XDF file steveo linked you. Now open your BIN file in TunerPro with File->Open Bin... and voila, you can edit your own cars all on your own. It will also help to change the "View By:" on the left to "Parameter Category" to make things easier to edit.
Best of luck.
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