WEISTEC M156/M159 Oil / Air SeparatorWeistec's Oil Air Separator system is a must have for completely stock vehicles, to those upgraded with the Weistec Supercharger. The separator system vastly decreases oil retention by the engine, reduces detonation (Knock), and can ultimately save the life of the engine internals. As the excess crankcase pressure is vented through the PCV valve and into the intake manifold the engine will eventually draw in, not only air which is wanted, but also

By addressing some of these minor issues

As the excess crankcase pressure is vented through the PCV valve and into the intake manifold the engine will eventually draw in

This revised version of a factory mount addresses a single issue (of many) problems with factory style mounts

you must go to the root of the issue

Lug Bolt Information

If you answered yes to either one

81 left and right toe

10mm/12mm spacers OK

as all wheels can vary

2008-2013 E9X M3

rely on a pivot assembly that binds when new

This wiggle gets worse when the car is being driven in turns