Got two new parcels today. One is a boost sensor and another have three deadcats!! (sorry! three windscreens for my gopro mic)
So early morning I jump to the work and took the old sensor out and replaced with the new universal boost sensor.
Oh unfortunately with the new sensor gauge read boost little bit higher about 4 PSI in normal atmospheric conditions.
But nothing to worry about it, simple 10k trimpot is all that takes to bring it down to correct level. These boost gauges are nothing but little voltmeters so we can reduce voltages send from the boost transducer to show correct calibrated value in the gauge using a variable resister as a voltage divider.
Voila! gauge reads boost correctly! 0 PSI engine off, -21 idling and 27 -28 PSI peak boost at full throttle in 4th gear as APR claims.
As usual I dissemble the broken boost sensor to see inside .. Nothing special two op-amps and a pressure sensor and a small regulator in tiny PCB board.
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