What Ender is saying is yes the Evo3 16G is known for boost creep, with the stock internal wastegate. But this guy is Not running a stock internal on his Setup...


The next thing I would normally ask in here would be how is your wastegate mounted? If It's still off the wastegate dump then I would say you have not ported it to flow what the wastegate can flow.

But you said it holds steady with your boost control turned off, it seams as though everyone needs to focus their attention to the method of contol, and what the possible fixes could be.