It's all sorted now, the noise has totally gone
I picked up the car on saturday,
it's is so much quieter now and the engine sounds great.
Though the final bill came to £3700 even with a very healthy discount.
I was very impressed with sytners as a main dealer,
particularly Pat Smith my service advisor, she helped make a difficult situation a lot easier.
hopefully i can enjoy some trouble free bmw motoring for a while now....