Ok, i'm going to turbo my Z6. I am going T3, and aparently the flange that I need to buy to bolt up a downpipe (or even aftermarket downpipe) will block off the internal wastegate. This kind of pisses me off, but i guess it's the only way (if it's not please tell me how i can still use the internal wastegate). So i have done research on external wastegates, but I do not know where they bolt up to. Do they go before, or after the turbo? I'm very confused. Some pictures or someshit would be very helpful. I don't know jack about external wastegates, only internal. Thanks for your support! I'm sure this post will get many bullshit comments other than answering my question, but if not, then you are my bestest new friend!