Right guys and girls, need a bit of help. Did a vanos rebuild including rattle rings a couple of weekends ago on my 2003 3.0i z4, noticed a difference straight away. Just put Carly on to check things and I have codes related to vanos! No EML, just in Carly. I have replaced coil 4 and put in a new camshaft sensor...still no joy! What have I buggered up? Also, this is a bit dumb after the event but did I need to get it timed?