Don't mean to hijack the thread, but I think I have a semi-related question. Is a Z4M "valve adjustment" the same thing as this "VANOS" issue? My Z has 24k miles and I was thinking of having the valves adjusted at the shop this spring. Do I also need to ask them to check on something to do with the VANOS? (And no, I have little clue as to what a VANOS is, besides hearing about it on this forum. I'm a sales guy...no mechanical experience.) Thanks!
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