Comments by "Mikko Rantalainen" (@MikkoRantalainen) on "" video.

The margin to 0 and 5 V levels is designed to allow detecting if the wire is (almost) shorted to ground or to power.
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22:00 It still seems plausible that the actual mechanical part of the turbo comes from the same factory but the servo controller is definitely different!
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@ The margin (0.5 V) applies to both extremes of the voltage range that the sensor uses: 0 V for ground and 5 V for power input. As a result, when the sensor range has 0.5 V margin to all known voltage levels, the usable range for the sensor values are 0.5 ... 4.5 V.
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It would be interesting to see if you could make the ECU happy with the aftermarket turbo simply by adding a variable resistor between +5V and signal wire and adjust the resistor to have 0.5V at the lowest controller arm position. Obviously that wouldn't make the part equivalent to real OEM part but it might have been enough to allow the ECU to accept it and run it correctly! Another option would be to build voltage divider between 0V and 5V wires with pretty high resistance resistors to set the voltage but with high enough resistance the controller arm movement would be hopefully tracked correctly above 0.5V level.
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@Diagnosedan How does this car control boost pressure? I have experience only with older VAG TDI engines and those use separate absolute boost pressure sensor and run in closed loop via ECU to control the boost pressure (probably PID controller). The sensor on the vane is only used to verify that that vanes are not physically stuck. However, this all could be totally manufacturer dependant so the hack I suggested may or may not work depending how the ECU is implemented.
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9:20 I would have expected ECU pin for the turbo signal to be bent or broken.
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