It's OK - I didn't expect you to reply since the thread was a year old! But thank you anyway. It seems that when the P1092 and P1093 appear together, it's somehow fuel-related. I'm hoping by the end of this fuel system treatment that my issues will be resolved. We shall see.

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2006 X5 3.0L - Schwarz Black/Truffle Brown
Stock
But I keep it clean