[nicsteez]

Hey guys. 07 e90 335i here. When installing catch can do you have to get pcv delete valve? Upgraded pcv valve? Please let me know!

[WatchWolf34]

You don't need to upgrade anything else at all. I ran just the BMS catch can for quite a while before updating to the RB PCV valve.

[nissubaru]

While we're on the subject, does anyone know what size hose inner diameter is needed for these PCV and catch cans? I have relocated inlets and I'm trying to add the BMS catch can but I need to buy my own hoses to make it work.

[nicsteez]

Originally Posted by nissubaru

While we're on the subject, does anyone know what size hose inner diameter is needed for these PCV and catch cans? I have relocated inlets and I'm trying to add the BMS catch can but I need to buy my own hoses to make it work.

Well you need 180 degree bends in the hoses so it's a lot easier just to get the bms ones. No clue on size