as above what would happen if i dont put an uprated oil breather system on my s2....im only running standard atm but do inted to get a new baileys one......what would happen if i run big power without one...somthing to do with crankcase preasure yeh

 

Excessive Crank Case Pressure Will Blow Gaskets Every Where

 

as above plus start burning oil and smokey, foul the plugs causing misfires etc