I'm also having vanos issues at 29k miles. I am taking off all my mods and taking to a dealer. I have a permanent check engine light right now and codes pointing to a vanos failure.
Selling everything for 1350$ + your stock exhaust(local) and set up a time to go uninstall install on a weekend when i don't work. (extremely cheap. )
Current: 2011 Honda Accord.
Past: 2013 335i 6mt msport
JB4, ER Downpipe, ATM FMIC, aFe Momentum PRO 5R Intake, Pure Stage 2
Past: 2011 335i coupe 369 whp/444 torque