My car has a vac-referenced pressure regulator and a "gauge style" sensor (referenced to atmospheric).
I made a custom.ini so the fuel pressure gauge is not only reading the raw pressure in kPa but directly displaying the differential fuel pressure across the injectors in bar instead of kPa.
I came up with the following code:
Code: Select all
[OutputChannels]
Fuelpressure = { (sensor03 - map + barometer) / 100 }
However I just found out, that TunerStudio has implemented that gauge already, so creating the custom.ini actually was unnecessary.
The thing though is, that my selfmade gauge is showing different values than the one already implemented in TS.
I altered my formula until the two values matched and this is what I came up with:
Code: Select all
[OutputChannels]
Fuelpressure = { (sensor03 - map + barometer) / 101.35 }
1 bar = 10^5 Pa = 100kPa
So why 101.35? Seems to me that this is wrong in TS?
Thanks, David