Quote: Originally Posted by
_Dejan_ 
This is because software when receive data from OBD divide value which receive by 4... Im try connect to OBD with hyperterminal and request rpm and convert value from HEX to dec and I get real values in this software show me values divided by 4... So is posible where configure something like calibration? Because Im looking to buy software which have gauges and I can calibrate values... I can write application(in Delphi) but without gagues, so this don't help me...
I believe our software is reporting the correct values - otherwise I think we would have had many many customer complaints over the years.
In your case, I think I know where the confusion is coming from. You see, the vehicle reports the RPM in quarters of an RPM. So you have to divide by 4 to get the Engine Speed in whole numbers. If you are requesting it manually through hyperterminal, then you are actually seeing RPM times 4.