Progess being made finally!
Still very busy working on a big house addition in Pennsylvania, but got inspired to tweak my circuit last night.
I need to get a measurement of the dme impedance to fine tune the circuit but i updated the circuit to match the oil pressure sensor.
FYI: pressure = sensor voltage * 36 - 11
Right now the design is set to boost psi by 6.6 psi at idle and 9.1 at steady state.
The primary goal is to introduce some safery margin of which there is none.
I'm about to replace a friend's S63 motor that failed out of the blue at 42 kmi. That's crazy. That motor uses much higher oil pressure but if it keeps similar to S55, it will be just as low at idle and i suspect since most BMW motors I've seen fail it happens not long after anb oil change, they really need to have oil circuit primed even after an oil change.
I know any modern BMW motor I work on will get the oil ckt primed after oil changes.
–awr–
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