I'm very new to this but would like to say what a valuable site this is as its probably just saved me between 8-10K!!
I used this site to research the swirl flap issue on the diesel engines and as a result had mine removed just in the nick of time!! i have also come across another very important find with water drainage on the E60 models and feel the need to share this with you guys in the hope i can save somebody a lot of money.
I shall be putting pictures on concerning the swirl flap and water drain issues over the next few days once i have found how to do it, but in the meantime please contact me to discuss if you have any questions. I also have a great contact to do the swirl flaps for you at a very reasonable cost in the North Wales area if yours need doing.
Please bare with me as i try to upload the pics etc.