Hi all, in my first BMW a 2008 535xi. Monaco blue, beige interior, six speed manual. I have a set of 18" Bayern staggered wheels on it. My only mod to date is a Cobb flash tune which has been awesome. I have a question, should I install DP downpioes or a FMIC next? Does anybody know who can do a downpioes install in the New England area? Thanks all!