I have a 2007 335 with 90,000 miles. I have no smoke on cold start. When I park the car after driving it and start pulling out of a parking lot, a ton of smoke. I have noticed if I have the car idling and I hold the revs between 1k-2k rpm the cars shoots plumes of smoke. It smells like oil but even with the smoke it doesn't lose that much oil. Maybe a quart or two over 5k miles. I just changed the valve cover and valve cover gasket. Is it turbo seals? I have RB turbos that are about 15k miles old. Is it possible that the seals are bad already? I have read a few other posts but none are quite the same as mine.