[w068720]

I have checked all the pipes and also taken off the turbo to check for leaks and it all seems fine. The accompanying noise is not so much a whistle but more like a phew... sound and with the phew, the engine stutters for a split second, I notice it more going up hill when engine is cold, but it does occur anytime, but I don’t think it happens too often when under higher revs and higher speeds. I’ve also changed the fuel filter, but haven’t looked at the injectors, the car is lovely on tick over.