I had this issue a month ago purchased the bms oil catch can.. Haven't has an issue with smoke since I have 75k miles on stock twins as well
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2008 135i 6-speed current stock for now
1995 e36 M3 5-speed
Jb4 G5//CM-FX400//FBO//Meth// 12.06@118 6-speed manual sold summer 2013
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