Pin 102 the gray wire (EVAP pressure sensor) on the ECU is an input and would be used for your Flex fuel data line. There are two solenoids that are related to the EVAP system there is the Canister purge volume control solenoid which is an output that you can use for the wg solenoid the other which is the Vent control I am not sure you are able to use that as an output at least with ECUTek.
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