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EA81T quick question


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The digi and analog are the same.

They both use a pressure switch located on the passenger side strut tower. Its a dual purpose switch, sending a signal to the ECU telling it to increase injector duration when boost increases. At 1psi it sends a signal to the light on the dash.

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The analog gauge runs off of the one labeled Boost Sensor. Its a variable electric sender.

 

The digital gauge uses the pressure switch. Since the EA81T analog dash has a gauge and not a light, the pressure switch isn't used for the dash at all on the analog.

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