I have an Audi A3 8V 13 plate, the car is shaking in every gear, it brings up the coil light most mornings, the engine management light comes up and stays on all the time, it goes really slow then goes back to driving fine, I have had the boost Pressure Sensor change and the Boost Valve and air flow mass meter changed and still is playing up, I am trying to avoid going to Audi as they will be expensive and some people I have spoken to are stumped. Would anyone have any ideas how I can get this fixed?