Engine Coolant Temperature Related Configuration Parameters
- Traditionally coolant temperature range was -40..+102C, and had to be selected at firmware upload time.
- Since many engines regularly exceed 102C coolant, installers often cheated and uploaded 1900/256 hexfile instead of 2252/256 so the reading is appr 10C lower around 100..110C (this extended the range to 112C)
- With 1.1.50 or newer firmware, one can select Celsius (not Fahrenheit) based coolant table during firmware upload (eg. 2252/256). This way the maximum coolant temperature is 155C (range is -100C .. +155C). LCD and VemsTune / MegaTune communication was changed to reflect this(and show temperature that matches the internal representation)
The flash table is chosen in the settings/constants dialog:
Alternatively, the 17-point curve can be chosen.
- with 1.1.50 or newer firmware, coolant and MAT can be configured with a 17 point table:
While the traditional flash table must be selected at firmware upload time, this 17 point curve can be adjusted later, and easily matched even to special-custom setups without programming knowledge.
[[Manual: Detailed.Sensor.Coolant.Config]]
See also