I have thought of doing the same for some time, but have been hesitant because the temp sensing unit is also going to "Fool" the module. I think that has other funtions related to temp that you don't want fooled.
The other problem is the parallel resistance may be
right at that temp, but way off at others because the thermistor is changing with temp, but the installed one is not changing at all. So at lower /higher thermistor ohms with a constant value parallel will be way off.
Sooooooo..... are we affecting other ECU paremeters here ?????
Me no know-- me ....