I found these while junk yard salvaging. They came off an Audi bi-turbo set up. I had two. One is already sold so I have one left.
I've tested them on my 1.8t and they work just fine and hold my stock boost levels. (couldn't confirm chipped levels since I am not boosting more than 12psi atm)
I'm asking for 80$ for this shipping included. But I would prefer a local pickup.
Pm me if interested for any further details or to buy this.