Originally Posted by
Caddyshack
Please excuse a silly question but when our turbos only run at say 2.2 bar why do we need 4 bar and where on the car do you see 3.5 bar?
Any why would Ian blow a 3 bar?
Pressure is absolute not gauge pressure.
The ecu needs to have the lowest pressure scaled against the voltage range.
E.g. 0.5v - 4.5v sensor range to the lowest pressure 30kpa or 0.30bar.
Remember your engine will run at vacuum. Vacuum is just low pressure. Lower than atmospheric.
Either over pressure on the sensor range (running more than 2bar gauge pressure) or shit sensors.