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Discussion Starter · #1 ·
i know its a variable geometry turbo but im curious to know how its controlled. the turbo on the 04.5-07 trucks with the 5.9 is just a two-wire solenoid to control when the wastegate sees boost. that could be controlled on a different application with a pulse-width modulation controller, similar to an injector driver. or just a pressure switch to limit when pressure is sent to the wastegate so the wg valve doesnt eek open as boost begins to build.

however, the 6.7 turbo has more than 2 wires coming from its control section. is it a stepper motor or something? id like to learn anything about it...

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