chinese 3.3 bar duramax map sensor
#7
so my advice is don't use the cheap $30 version of this sensor. buy the delphi one if you are gonna use it.
I was getting all sorts of funky readings at idle with it, and it would never go above 100kpa while my boost gauge was saying a couple psi...so I decided to set up a test rig with a airbrush pressure regulator set to ~5psi
the result
I switched to the more common GM 12223861 sensor and it scaled nicely. solid 100kpa at KOnEOff and around 45-50kpa at idle.
I was getting all sorts of funky readings at idle with it, and it would never go above 100kpa while my boost gauge was saying a couple psi...so I decided to set up a test rig with a airbrush pressure regulator set to ~5psi
the result
I switched to the more common GM 12223861 sensor and it scaled nicely. solid 100kpa at KOnEOff and around 45-50kpa at idle.