Evning chaps, my 03' 115ps Tdci has started going into limp mode when you boot it hard in low gears (upto 3rd) It seems fine if you apply the throttle slowly, but when you boot it then the engine manegment lights flash and it drops down in power, does this sound like over boost and if it is where or what do I check? It had a new turbo 18 months ago so I am assuming it's not that, any help would be much appreciated.