I was looking though the constants on the new xdf for the 8746 on v4 and came across "BLM - Min temp BLM learn threshold at 189." Would that be the minimum temperature for the computer to make BLM fuel correction? I am a newbie when it comes to this so I'm probably wrong, but should it be lower than my thermostat?

 

I could be totally wrong and greenfooted on this one, but my clutch went down so I wasn't able to test it.

 

Notice the units are "a/d", this means you need to do a lookup using the 61 for 8746_TBI.txt file. I hope you downloaded that and are using it for getting the temperatures correct. Almost all of the temps in the earlier c3 type ecm's use this complex curve for the temperature that is far from linear. Infact, I can't even get a good curve fit in "normal" engine operating range so I just left it as a lookup table that you have to do. I hope in the next release of TunerPro he'll have implemented table lookup with interpolation . I think it's on the drawing board but not sure what place it's in.

 

Just to make sure I understand, 189 a/d equals 65º F, correct?

 

Nope, you're looking at the wrong columns. What you did was compare the a/d temp to the a/d inverse temp.
You need to look use the raw lookup and then depending on the type of lookup (normal a/d or inverse) use the values in the other 2 columns.
Example; 189 a/d = 77 degrees. If it were 189 a/d inverse = 174.