On my 8 year old computer it takes about 130 seconds.
Try opening the Editor with more memory.
In the "run.bat" file try increasing -Xms32M -Xmx384M
to -Xms64M -Xmx768M
I haven't found a good description document for all the def parameters yet.
But if you open one created for a petrol car you can get a good sense of the layout.
It's setup to have a "template" section called a base, 32BITBASE usually. Then a unique section that modifies the base template. Look at this for example:
viewtopic.php?f=34&t=6704 the base is at the end of the document.
In this def for the 2.0T Diesel the formula for data conversion is straight out of the ROM. A value is used to scale the table data and an offset is added to shift it.
result = RomData * scaler + offset
For things like temperature, if you wish to see Fahrenheit degrees then you need to convert the
result with a formula for Celsius to Fahrenheit.
Similar for pressure, convert the ROM's mmHg to bar or psi as required by applying the conversion to the
result.