How do I use a Crankcase Pressure sensor?

A crankcase sensor is typically plumbed into the engine sump through a fitting attached to the side of the sump pan, this is then connected to the sensor using a short rubber or silicon hose to lift the sensor above the fluid level of the sump.  A pulse dampener can be used to smooth out the pulsations in the sump if desired, but this is not a requirement.  A small filter can also be used to reduce the amount of oil mist present in the sampling tube and to minimise that oil mist from reaching the sensor.

For most engines, a 2 bar map sensor will provide adequate range and resolution for monitoring the crankcase pressure, on some engines that use higher boost pressures you may need to use a 3 bar or higher ranged MAP sensor.