[jaysone90]

Also, don’t use heater hoses use fuel grade hoses.

https://www.amazon.com/dp/B088X2N3JQ...spXa6QjoXBtYCk

[jaysone90]

1/2" Fuel Check Valve,Engraved with Flow Direction,Aluminium Alloy One Way Valve for Air Fuel Oil Diesel Gas E85 or Other Liquid Transfer Check Valve Car Parts (12mm) https://a.co/d/fwJaQbt

from catch to intake

[The Nightman]

Originally Posted by jaysone90

1/2" Fuel Check Valve,Engraved with Flow Direction,Aluminium Alloy One Way Valve for Air Fuel Oil Diesel Gas E85 or Other Liquid Transfer Check Valve Car Parts (12mm) https://a.co/d/fwJaQbt

from catch to intake

Could you explain why?

[jaysone90]

Originally Posted by The Nightman

Could you explain why?

Well if anyone wanted to ensure proper air flow and to ensure it goes one direction. Is it really needed? You of all would be a good person to ask. Doesn't hurt to install it, you just need to make sure you buy the right diameter one.

https://www.amazon.com/Check-Valve-B...s%2C354&sr=8-4


This is the only one I manage to fine that is a tight fit. By the way I got the hoses you recommended bro. Thank you for pointing that out to me as we speak I am doing this. I also got my inline check valve today but its too small so I will order that one.

[jaysone90]

Done

[blingers]

There is also the mishimoto check valve MMFT-CHKVLV-34

https://www.mishimoto.com/performanc...valve-3-4.html

[Chking_it_out]

Originally Posted by s5s

I was about to install a catch can on 330i but I came across this video which seems to suggest you shouldn't:

Anyone have issues putting on a 330i G20 with B46d? I’ve browsed the threads about not installing, then of course there are lots that say it’s a must have; just checking for more opinions.