Well all has been fine with my CLK (270 CDI) until today. Just popped into Cornwall and all was fine as usual. Started the car ready for my trip home to Devon and as soon as I pulled out of the car park... No boost. Drove the 70 mile journey back to my home town with the ecu light on, rather slow !! Still got up to legal motorway speed (eventually). Anyway I called a friend of mine who has a Star reader and it basically showed fault as "Inlet shut off closed". Looks like a busy weekend for me, just in time for Christmas... Wonderful !! I'll update my findings but I'm guessing it'll be coked up swirl flaps. I see most people take them out and then blank the holes which are left behind, this will likely be my plan of action along with a resistor for motor if required. If I have time I'll do a proper write up with large clear pictures. .