Almost brilliant, but depends on the atmosphere port size....

I will elaborate so you understand, using the pictures above as my example:

Basic rundown for a breather system to be more efficient than a std one:

The Standard system comprises of one kidney box oil vapour separator that alleviates the crankcase pressure via 1 x 15mm outlet, venting to atmosphere via the standard air box.

Biggest problems with the std system:
1) It is only 15mm, not ideal for cars with large blowby.

2) It draws fumes and oil vapour, as standard, into the inlet under all off boost conditions, via the one way valve often causing oil burning.

3) It is only plumbed into the nearside of the block. Under hard right hand corners, oil surge can see the oil totally overloading the standard system and sending neat oil into the breather, often seen as oil pouring out of the oil filter.

Problems with the system in teh picture as they "Appear":
Point 1) Unless I am missing something that’s hidden, is not addressed at all?

Point 2) This is "possibly" addressed? (Cant see inlet clearly)

Point 3) This is almost certainly addressed but im not sure that the O/S hasn’t been used as an oil return instead? If so, it can only return oil when off the power unless a special adaptor has been used to drop the oil below sump lubricant level?

Hope this helps....