Motive Auto Works in Woburn.
I drive over an hour to have him service my car. He has done a turbo upgrade and multiple other things for my subie. Most recent was replace my center diff.
His name is Alberto.
Give him a call/text/ or email
Tell him Steven with the Spec b sent you.
Tell him your problem, and im sure he can find the right fix for you. His customer service is amazing.