I finally picked up a 3-stage manifold, complete with DISAs, today. I can't wait to unleash the full potential of the tune! However, the weather is starting to turn to crap, so I probably won't be able to get to it before next spring (I HAAAAATE winter!!!
I have a question for those who have done the swap on a 328i. The manifold I got has the round external oil separator. I understand that's not needed on the 328i, so can I just remove it? What do I do with the ports that separator hoses use?