Hi im am having the same problem when i accelerate to red line then take my foot off the accelerator the car drops and the whole engine shakes.
I have stock ecu,turbo,fmic,turbo exhaust.
i took my car to be diagnosed today but couldn't find the problem. The fuel pump,air flow meter,cas, has been checked and still having same problem..........
I'm sick of wasting time and money can anyone help.