I think I need to apply 12v to pin 86, instead of ground. The instructions say :
"The green wire on the controller is the 1.7 amp switched ground. This wire can be hook up to a solenoid that will vent wastegate pressure when activated. Apply 12 volts to the other side of the solenoid. this output can also be used to trigger a timing retard function in a standalone ECU or a CDI whenever the system runs out of fluid, thus protecting your engine. It is highly recommended of this feature be utilized."