156 20V lack of torque(boost) above 2000 rpm
There is no boost above 2000 rpm. As soon as turbo should start to boost up car starts to be lazy during acceleration, I mean it accelerates but not the way it should. I red FIY known issues, and about pierburg electro-pneumatic valve vacuum hose...How vacuum reservoir works, I supose it is vacuum pump electric propelled? Is it under error messages diagnostic system.
What are the chances that I have broken turbo pneumatic regulator membrane (wastegate actuator, and how could that happened when it's vacuum operated as I understand) or maybe even cracked intercooler or vacuum reservoir. Did anyone have such issues with 20V MJet? Is it possible that I have cracked intake manifold instead of cracked intercooler.
Car does accelerate but not the way it should, more like 130 BHP car. There is still massive torque under 2000 rpm, so it doesn't seem to me its engine problem. There are no Errors at diagnostics. Broken intake hoses turbo<->IC<->manifold are excluded (stainless steel).
I'm starting to be sick about this problem, but I don't want to start buying parts when I'm not sure which one is faulty.