I want this to not be too good to be true. I'm not even concerned about the reliability of these stock—I DD an E39 M5 and have already gone through VANOS issues and the dreaded "never ending stutter chase" and with an OBD scanner, youtube, forums, and a BMW CCA parts discount I've concluded the horror stories… » 1/25/15 1:48pm 1/25/15 1:48pm