DIY Low-side PCV installation (E89 Z4)

[steve30]

Thanks for updating this thread as I'm trying to finalize my setup. The issue for myself is that I'm using the M18 valve cover and its currently double catch can VTA. The motor is built, single turbo and the head ports are plugged. I'd like some advice on what route I should go.

I see M18 sells the high & low side kit: https://m18.racing/products/m18-stock-pcv-aftermarket-hook-up?variant=42999722377471
I just need to figure out the high side and whether or not I need to use the oem flapper?
I also have M18's oil cap along with the flap: https://m18.racing/products/m18-16an-billet-oil-cap-breather
https://m18.racing/products/m18-flap

Any advice from our resident experts would be greatly appreciated, Thanks!

 

[HCMW_Adam]

The info about needing to meter the amount of vacuum in the crank case is really helpful. Thank you. I am working on changing my own PCV system now and did not know about that at all.

 

[Leadtoe]

Thanks for this Great thread ... I'm currently installing a DYI dual Can system into my 2014 E89. With the current amount of opinionated nonsense out there on the WWW these days, this info has been invaluable .

Thanks again