I removed mine from my Z4 M this weekend, made a huge difference... You can just open the delay valve out and then tighten the lines back together. it May require you to bleed the clutch while you are there, but its easy, watch you tube videos and check online DIY's.
Edit: jack your car up on the passenger side, crawl under and check the valve should be somewhere on the passenger side of the bell housing, you will be able to check if its metal or a plastic one. if its metal, just remove it. Plastic is another story, i dont know how that works.