I'm installing the ZFR and I noticed that the wastegate solenoid seems to be missing something. There's an open port on the solenoid and an opening on the turbo that look like should be connected together with a hose. The K04 is plumbed that way and there's nothing to connect to on the ZFR. I sent ZZP an email last night, but I don't expect a response until Monday. Does anybody know what the deal is with this? All the pictures I've found of the ZFR look like mine, but it looks incomplete to me.

 

So, that hole on the compressor doesn't seem to go all the way through. I'm guessing it's a common casting for different models. Still, the solenoid port is open and I don't see where that should go.

 

ZZP got back to me. That open port on the solenoid is meant to stay open, and the opening in the compressor housing isn't used. That's why it doesn't go all the way through.

 

The hole that doesn't go all the way through is for a compressor speed sensor. You take the housing off drill the rest of the hole then u can add the sensor

 

Thanks. ZZP told me what it was, too. I don't expect to be needing it.